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Finding the Fourth Proportional to 67,637.80, 101,456.70 and 64,412.20

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Solution

The fourth proportional to 67,637.80, 101,456.70 and 64,412.20 is: 96,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,637.80 : 101,456.70 = 64,412.20 : x
  2. Step 2: Convert to fraction form
    67,637.80/101,456.70 = 64,412.20/x
  3. Step 3: Cross multiply
    67,637.80x = 101,456.70 × 64,412.20
  4. Step 4: Simplify right side
    67,637.80x = 6,535,049,251.74
  5. Step 5: Solve for x
    x = 6,535,049,251.74/67,637.80
  6. Step 6: Final answer
    x = 96,618.30

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1.5x scale

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.