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Finding the Fourth Proportional to 67,129.60, 92,582.40 and 56,544

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Solution

The fourth proportional to 67,129.60, 92,582.40 and 56,544 is: 77,983.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,129.60 : 92,582.40 = 56,544 : x
  2. Step 2: Convert to fraction form
    67,129.60/92,582.40 = 56,544/x
  3. Step 3: Cross multiply
    67,129.60x = 92,582.40 × 56,544
  4. Step 4: Simplify right side
    67,129.60x = 5,234,979,225.60
  5. Step 5: Solve for x
    x = 5,234,979,225.60/67,129.60
  6. Step 6: Final answer
    x = 77,983.17

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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.