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Finding the Fourth Proportional to 54,895,614.40, 82,318,538.40 and 20,805,630.40

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Solution

The fourth proportional to 54,895,614.40, 82,318,538.40 and 20,805,630.40 is: 31,199,014.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,895,614.40 : 82,318,538.40 = 20,805,630.40 : x
  2. Step 2: Convert to fraction form
    54,895,614.40/82,318,538.40 = 20,805,630.40/x
  3. Step 3: Cross multiply
    54,895,614.40x = 82,318,538.40 × 20,805,630.40
  4. Step 4: Simplify right side
    54,895,614.40x = 1,712,689,085,018,607.25
  5. Step 5: Solve for x
    x = 1,712,689,085,018,607.25/54,895,614.40
  6. Step 6: Final answer
    x = 31,199,014.78

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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.