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Finding the Fourth Proportional to 86,323.60, 129,432.60 and 33,672.40

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Solution

The fourth proportional to 86,323.60, 129,432.60 and 33,672.40 is: 50,488.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,323.60 : 129,432.60 = 33,672.40 : x
  2. Step 2: Convert to fraction form
    86,323.60/129,432.60 = 33,672.40/x
  3. Step 3: Cross multiply
    86,323.60x = 129,432.60 × 33,672.40
  4. Step 4: Simplify right side
    86,323.60x = 4,358,306,280.24
  5. Step 5: Solve for x
    x = 4,358,306,280.24/86,323.60
  6. Step 6: Final answer
    x = 50,488.00

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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.