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Finding the Fourth Proportional to 52,321.71, 78,482.57 and 15,385.71

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Solution

The fourth proportional to 52,321.71, 78,482.57 and 15,385.71 is: 23,078.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,321.71 : 78,482.57 = 15,385.71 : x
  2. Step 2: Convert to fraction form
    52,321.71/78,482.57 = 15,385.71/x
  3. Step 3: Cross multiply
    52,321.71x = 78,482.57 × 15,385.71
  4. Step 4: Simplify right side
    52,321.71x = 1,207,510,366.00
  5. Step 5: Solve for x
    x = 1,207,510,366.00/52,321.71
  6. Step 6: Final answer
    x = 23,078.57

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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.