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Finding the Fourth Proportional to 86,371.71, 129,574.98 and 36,451.86

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Solution

The fourth proportional to 86,371.71, 129,574.98 and 36,451.86 is: 54,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,371.71 : 129,574.98 = 36,451.86 : x
  2. Step 2: Convert to fraction form
    86,371.71/129,574.98 = 36,451.86/x
  3. Step 3: Cross multiply
    86,371.71x = 129,574.98 × 36,451.86
  4. Step 4: Simplify right side
    86,371.71x = 4,723,249,030.46
  5. Step 5: Solve for x
    x = 4,723,249,030.46/86,371.71
  6. Step 6: Final answer
    x = 54,685.14

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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.