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Finding the Fourth Proportional to 86,359.68, 129,483.88 and 36,426.42

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Solution

The fourth proportional to 86,359.68, 129,483.88 and 36,426.42 is: 54,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,359.68 : 129,483.88 = 36,426.42 : x
  2. Step 2: Convert to fraction form
    86,359.68/129,483.88 = 36,426.42/x
  3. Step 3: Cross multiply
    86,359.68x = 129,483.88 × 36,426.42
  4. Step 4: Simplify right side
    86,359.68x = 4,716,634,105.04
  5. Step 5: Solve for x
    x = 4,716,634,105.04/86,359.68
  6. Step 6: Final answer
    x = 54,616.16

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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.