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Finding the Fourth Proportional to 64,773.50, 89,387.70 and 36,479.66

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Solution

The fourth proportional to 64,773.50, 89,387.70 and 36,479.66 is: 50,342.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,773.50 : 89,387.70 = 36,479.66 : x
  2. Step 2: Convert to fraction form
    64,773.50/89,387.70 = 36,479.66/x
  3. Step 3: Cross multiply
    64,773.50x = 89,387.70 × 36,479.66
  4. Step 4: Simplify right side
    64,773.50x = 3,260,832,904.18
  5. Step 5: Solve for x
    x = 3,260,832,904.18/64,773.50
  6. Step 6: Final answer
    x = 50,342.08

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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.