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Finding the Fourth Proportional to 86,322.61, 129,483.63 and 38,882.18

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Solution

The fourth proportional to 86,322.61, 129,483.63 and 38,882.18 is: 58,323.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,322.61 : 129,483.63 = 38,882.18 : x
  2. Step 2: Convert to fraction form
    86,322.61/129,483.63 = 38,882.18/x
  3. Step 3: Cross multiply
    86,322.61x = 129,483.63 × 38,882.18
  4. Step 4: Simplify right side
    86,322.61x = 5,034,605,161.30
  5. Step 5: Solve for x
    x = 5,034,605,161.30/86,322.61
  6. Step 6: Final answer
    x = 58,323.14

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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.