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Finding the Fourth Proportional to 98,345.60, 135,729.12 and 60,097.28

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Solution

The fourth proportional to 98,345.60, 135,729.12 and 60,097.28 is: 82,941.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,345.60 : 135,729.12 = 60,097.28 : x
  2. Step 2: Convert to fraction form
    98,345.60/135,729.12 = 60,097.28/x
  3. Step 3: Cross multiply
    98,345.60x = 135,729.12 × 60,097.28
  4. Step 4: Simplify right side
    98,345.60x = 8,156,950,928.79
  5. Step 5: Solve for x
    x = 8,156,950,928.79/98,345.60
  6. Step 6: Final answer
    x = 82,941.70

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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.