Home / 39,720,897.81-54,839,294.12-31,494,191.13

Finding the Fourth Proportional to 39,720,897.81, 54,839,294.12 and 31,494,191.13

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Solution

The fourth proportional to 39,720,897.81, 54,839,294.12 and 31,494,191.13 is: 43,481,373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720,897.81 : 54,839,294.12 = 31,494,191.13 : x
  2. Step 2: Convert to fraction form
    39,720,897.81/54,839,294.12 = 31,494,191.13/x
  3. Step 3: Cross multiply
    39,720,897.81x = 54,839,294.12 × 31,494,191.13
  4. Step 4: Simplify right side
    39,720,897.81x = 1,727,119,210,528,300.75
  5. Step 5: Solve for x
    x = 1,727,119,210,528,300.75/39,720,897.81
  6. Step 6: Final answer
    x = 43,481,373.93

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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.