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Finding the Fourth Proportional to 73,404.38, 109,915.08 and 40,055.51

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Solution

The fourth proportional to 73,404.38, 109,915.08 and 40,055.51 is: 59,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,404.38 : 109,915.08 = 40,055.51 : x
  2. Step 2: Convert to fraction form
    73,404.38/109,915.08 = 40,055.51/x
  3. Step 3: Cross multiply
    73,404.38x = 109,915.08 × 40,055.51
  4. Step 4: Simplify right side
    73,404.38x = 4,402,704,710.67
  5. Step 5: Solve for x
    x = 4,402,704,710.67/73,404.38
  6. Step 6: Final answer
    x = 59,978.78

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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.