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Finding the Fourth Proportional to 88,428.68, 132,465.36 and 43,920.80

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Solution

The fourth proportional to 88,428.68, 132,465.36 and 43,920.80 is: 65,792.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,428.68 : 132,465.36 = 43,920.80 : x
  2. Step 2: Convert to fraction form
    88,428.68/132,465.36 = 43,920.80/x
  3. Step 3: Cross multiply
    88,428.68x = 132,465.36 × 43,920.80
  4. Step 4: Simplify right side
    88,428.68x = 5,817,984,583.49
  5. Step 5: Solve for x
    x = 5,817,984,583.49/88,428.68
  6. Step 6: Final answer
    x = 65,792.96

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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.