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Finding the Fourth Proportional to 86,475.30, 129,793.80 and 53,260.16

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Solution

The fourth proportional to 86,475.30, 129,793.80 and 53,260.16 is: 79,940.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,475.30 : 129,793.80 = 53,260.16 : x
  2. Step 2: Convert to fraction form
    86,475.30/129,793.80 = 53,260.16/x
  3. Step 3: Cross multiply
    86,475.30x = 129,793.80 × 53,260.16
  4. Step 4: Simplify right side
    86,475.30x = 6,912,838,555.01
  5. Step 5: Solve for x
    x = 6,912,838,555.01/86,475.30
  6. Step 6: Final answer
    x = 79,940.04

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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.