Home / 39,948,790,662.86-55,128,892,225.93-21,637,392,778.91

Finding the Fourth Proportional to 39,948,790,662.86, 55,128,892,225.93 and 21,637,392,778.91

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Solution

The fourth proportional to 39,948,790,662.86, 55,128,892,225.93 and 21,637,392,778.91 is: 29,859,364,320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,948,790,662.86 : 55,128,892,225.93 = 21,637,392,778.91 : x
  2. Step 2: Convert to fraction form
    39,948,790,662.86/55,128,892,225.93 = 21,637,392,778.91/x
  3. Step 3: Cross multiply
    39,948,790,662.86x = 55,128,892,225.93 × 21,637,392,778.91
  4. Step 4: Simplify right side
    39,948,790,662.86x = 1,192,845,494,558,712,397,824
  5. Step 5: Solve for x
    x = 1,192,845,494,558,712,397,824/39,948,790,662.86
  6. Step 6: Final answer
    x = 29,859,364,320.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.