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Finding the Fourth Proportional to 64,442.40, 88,931.20 and 36,147.52

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Solution

The fourth proportional to 64,442.40, 88,931.20 and 36,147.52 is: 49,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,442.40 : 88,931.20 = 36,147.52 : x
  2. Step 2: Convert to fraction form
    64,442.40/88,931.20 = 36,147.52/x
  3. Step 3: Cross multiply
    64,442.40x = 88,931.20 × 36,147.52
  4. Step 4: Simplify right side
    64,442.40x = 3,214,642,330.62
  5. Step 5: Solve for x
    x = 3,214,642,330.62/64,442.40
  6. Step 6: Final answer
    x = 49,883.96

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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.