Home / 39,948,790,663.86-55,128,892,227.31-21,637,392,779.91

Finding the Fourth Proportional to 39,948,790,663.86, 55,128,892,227.31 and 21,637,392,779.91

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Solution

The fourth proportional to 39,948,790,663.86, 55,128,892,227.31 and 21,637,392,779.91 is: 29,859,364,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,948,790,663.86 : 55,128,892,227.31 = 21,637,392,779.91 : x
  2. Step 2: Convert to fraction form
    39,948,790,663.86/55,128,892,227.31 = 21,637,392,779.91/x
  3. Step 3: Cross multiply
    39,948,790,663.86x = 55,128,892,227.31 × 21,637,392,779.91
  4. Step 4: Simplify right side
    39,948,790,663.86x = 1,192,845,494,643,633,946,624
  5. Step 5: Solve for x
    x = 1,192,845,494,643,633,946,624/39,948,790,663.86
  6. Step 6: Final answer
    x = 29,859,364,321.70

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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.