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Finding the Fourth Proportional to 91,730.60, 137,466.30 and 56,565.80

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Solution

The fourth proportional to 91,730.60, 137,466.30 and 56,565.80 is: 84,768.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,730.60 : 137,466.30 = 56,565.80 : x
  2. Step 2: Convert to fraction form
    91,730.60/137,466.30 = 56,565.80/x
  3. Step 3: Cross multiply
    91,730.60x = 137,466.30 × 56,565.80
  4. Step 4: Simplify right side
    91,730.60x = 7,775,891,232.54
  5. Step 5: Solve for x
    x = 7,775,891,232.54/91,730.60
  6. Step 6: Final answer
    x = 84,768.78

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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.