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Finding the Fourth Proportional to 64,681.95, 89,260.96 and 36,387.66

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Solution

The fourth proportional to 64,681.95, 89,260.96 and 36,387.66 is: 50,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,681.95 : 89,260.96 = 36,387.66 : x
  2. Step 2: Convert to fraction form
    64,681.95/89,260.96 = 36,387.66/x
  3. Step 3: Cross multiply
    64,681.95x = 89,260.96 × 36,387.66
  4. Step 4: Simplify right side
    64,681.95x = 3,247,997,463.75
  5. Step 5: Solve for x
    x = 3,247,997,463.75/64,681.95
  6. Step 6: Final answer
    x = 50,214.90

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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.