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Finding the Fourth Proportional to 57,631.70, 86,459.70 and 18,192.80

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Solution

The fourth proportional to 57,631.70, 86,459.70 and 18,192.80 is: 27,293.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,631.70 : 86,459.70 = 18,192.80 : x
  2. Step 2: Convert to fraction form
    57,631.70/86,459.70 = 18,192.80/x
  3. Step 3: Cross multiply
    57,631.70x = 86,459.70 × 18,192.80
  4. Step 4: Simplify right side
    57,631.70x = 1,572,944,030.16
  5. Step 5: Solve for x
    x = 1,572,944,030.16/57,631.70
  6. Step 6: Final answer
    x = 27,293.04

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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.