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Finding the Fourth Proportional to 38,889,602.96, 53,668,215.04 and 21,486,348.80

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Solution

The fourth proportional to 38,889,602.96, 53,668,215.04 and 21,486,348.80 is: 29,651,472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,889,602.96 : 53,668,215.04 = 21,486,348.80 : x
  2. Step 2: Convert to fraction form
    38,889,602.96/53,668,215.04 = 21,486,348.80/x
  3. Step 3: Cross multiply
    38,889,602.96x = 53,668,215.04 × 21,486,348.80
  4. Step 4: Simplify right side
    38,889,602.96x = 1,153,133,987,822,846
  5. Step 5: Solve for x
    x = 1,153,133,987,822,846/38,889,602.96
  6. Step 6: Final answer
    x = 29,651,472.37

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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.