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Finding the Fourth Proportional to 57,710.76, 86,565.06 and 18,270.24

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Solution

The fourth proportional to 57,710.76, 86,565.06 and 18,270.24 is: 27,405.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,710.76 : 86,565.06 = 18,270.24 : x
  2. Step 2: Convert to fraction form
    57,710.76/86,565.06 = 18,270.24/x
  3. Step 3: Cross multiply
    57,710.76x = 86,565.06 × 18,270.24
  4. Step 4: Simplify right side
    57,710.76x = 1,581,564,421.81
  5. Step 5: Solve for x
    x = 1,581,564,421.81/57,710.76
  6. Step 6: Final answer
    x = 27,405.02

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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.