Home / 54,128,412.40-81,215,946.60-31,428,713.20

Finding the Fourth Proportional to 54,128,412.40, 81,215,946.60 and 31,428,713.20

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Solution

The fourth proportional to 54,128,412.40, 81,215,946.60 and 31,428,713.20 is: 47,156,614.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128,412.40 : 81,215,946.60 = 31,428,713.20 : x
  2. Step 2: Convert to fraction form
    54,128,412.40/81,215,946.60 = 31,428,713.20/x
  3. Step 3: Cross multiply
    54,128,412.40x = 81,215,946.60 × 31,428,713.20
  4. Step 4: Simplify right side
    54,128,412.40x = 2,552,512,692,957,915
  5. Step 5: Solve for x
    x = 2,552,512,692,957,915/54,128,412.40
  6. Step 6: Final answer
    x = 47,156,614.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.