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Finding the Fourth Proportional to 81,332.88, 122,041.08 and 61,604.88

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Solution

The fourth proportional to 81,332.88, 122,041.08 and 61,604.88 is: 92,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.88 : 122,041.08 = 61,604.88 : x
  2. Step 2: Convert to fraction form
    81,332.88/122,041.08 = 61,604.88/x
  3. Step 3: Cross multiply
    81,332.88x = 122,041.08 × 61,604.88
  4. Step 4: Simplify right side
    81,332.88x = 7,518,326,088.47
  5. Step 5: Solve for x
    x = 7,518,326,088.47/81,332.88
  6. Step 6: Final answer
    x = 92,438.95

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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.