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Finding the Fourth Proportional to 83,404.60, 124,936.80 and 51,717.40

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Solution

The fourth proportional to 83,404.60, 124,936.80 and 51,717.40 is: 77,470.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,404.60 : 124,936.80 = 51,717.40 : x
  2. Step 2: Convert to fraction form
    83,404.60/124,936.80 = 51,717.40/x
  3. Step 3: Cross multiply
    83,404.60x = 124,936.80 × 51,717.40
  4. Step 4: Simplify right side
    83,404.60x = 6,461,406,460.32
  5. Step 5: Solve for x
    x = 6,461,406,460.32/83,404.60
  6. Step 6: Final answer
    x = 77,470.62

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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.