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Finding the Fourth Proportional to 64,780.60, 89,366.68 and 37,906.62

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Solution

The fourth proportional to 64,780.60, 89,366.68 and 37,906.62 is: 52,293.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,780.60 : 89,366.68 = 37,906.62 : x
  2. Step 2: Convert to fraction form
    64,780.60/89,366.68 = 37,906.62/x
  3. Step 3: Cross multiply
    64,780.60x = 89,366.68 × 37,906.62
  4. Step 4: Simplify right side
    64,780.60x = 3,387,588,779.42
  5. Step 5: Solve for x
    x = 3,387,588,779.42/64,780.60
  6. Step 6: Final answer
    x = 52,293.26

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1.5x scale

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.