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Finding the Fourth Proportional to 86,642.76, 129,968.73 and 24,318.12

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Solution

The fourth proportional to 86,642.76, 129,968.73 and 24,318.12 is: 36,478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,642.76 : 129,968.73 = 24,318.12 : x
  2. Step 2: Convert to fraction form
    86,642.76/129,968.73 = 24,318.12/x
  3. Step 3: Cross multiply
    86,642.76x = 129,968.73 × 24,318.12
  4. Step 4: Simplify right side
    86,642.76x = 3,160,595,172.39
  5. Step 5: Solve for x
    x = 3,160,595,172.39/86,642.76
  6. Step 6: Final answer
    x = 36,478.47

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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.