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Finding the Fourth Proportional to 61,281.50, 84,603.92 and 40,097.70

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Solution

The fourth proportional to 61,281.50, 84,603.92 and 40,097.70 is: 55,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,281.50 : 84,603.92 = 40,097.70 : x
  2. Step 2: Convert to fraction form
    61,281.50/84,603.92 = 40,097.70/x
  3. Step 3: Cross multiply
    61,281.50x = 84,603.92 × 40,097.70
  4. Step 4: Simplify right side
    61,281.50x = 3,392,422,402.50
  5. Step 5: Solve for x
    x = 3,392,422,402.50/61,281.50
  6. Step 6: Final answer
    x = 55,358.02

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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.