Home / 72,686,331.71-100,308,343.17-39,646,589.46

Finding the Fourth Proportional to 72,686,331.71, 100,308,343.17 and 39,646,589.46

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Solution

The fourth proportional to 72,686,331.71, 100,308,343.17 and 39,646,589.46 is: 54,712,950.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,331.71 : 100,308,343.17 = 39,646,589.46 : x
  2. Step 2: Convert to fraction form
    72,686,331.71/100,308,343.17 = 39,646,589.46/x
  3. Step 3: Cross multiply
    72,686,331.71x = 100,308,343.17 × 39,646,589.46
  4. Step 4: Simplify right side
    72,686,331.71x = 3,976,883,701,073,785
  5. Step 5: Solve for x
    x = 3,976,883,701,073,785/72,686,331.71
  6. Step 6: Final answer
    x = 54,712,950.94

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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.