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Finding the Fourth Proportional to 86,025, 129,037.50 and 23,695.50

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Solution

The fourth proportional to 86,025, 129,037.50 and 23,695.50 is: 35,543.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,025 : 129,037.50 = 23,695.50 : x
  2. Step 2: Convert to fraction form
    86,025/129,037.50 = 23,695.50/x
  3. Step 3: Cross multiply
    86,025x = 129,037.50 × 23,695.50
  4. Step 4: Simplify right side
    86,025x = 3,057,608,081.25
  5. Step 5: Solve for x
    x = 3,057,608,081.25/86,025
  6. Step 6: Final answer
    x = 35,543.25

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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.