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Finding the Fourth Proportional to 91,614.60, 137,441.52 and 28,433.40

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Solution

The fourth proportional to 91,614.60, 137,441.52 and 28,433.40 is: 42,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,614.60 : 137,441.52 = 28,433.40 : x
  2. Step 2: Convert to fraction form
    91,614.60/137,441.52 = 28,433.40/x
  3. Step 3: Cross multiply
    91,614.60x = 137,441.52 × 28,433.40
  4. Step 4: Simplify right side
    91,614.60x = 3,907,929,714.77
  5. Step 5: Solve for x
    x = 3,907,929,714.77/91,614.60
  6. Step 6: Final answer
    x = 42,656.19

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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.