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Finding the Fourth Proportional to 86,861.92, 130,510.68 and 55,285.60

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Solution

The fourth proportional to 86,861.92, 130,510.68 and 55,285.60 is: 83,067.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,861.92 : 130,510.68 = 55,285.60 : x
  2. Step 2: Convert to fraction form
    86,861.92/130,510.68 = 55,285.60/x
  3. Step 3: Cross multiply
    86,861.92x = 130,510.68 × 55,285.60
  4. Step 4: Simplify right side
    86,861.92x = 7,215,361,250.21
  5. Step 5: Solve for x
    x = 7,215,361,250.21/86,861.92
  6. Step 6: Final answer
    x = 83,067.02

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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.