Home / 57,061.28-78,762.90-40,069.64

Finding the Fourth Proportional to 57,061.28, 78,762.90 and 40,069.64

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Solution

The fourth proportional to 57,061.28, 78,762.90 and 40,069.64 is: 55,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,061.28 : 78,762.90 = 40,069.64 : x
  2. Step 2: Convert to fraction form
    57,061.28/78,762.90 = 40,069.64/x
  3. Step 3: Cross multiply
    57,061.28x = 78,762.90 × 40,069.64
  4. Step 4: Simplify right side
    57,061.28x = 3,156,000,654.54
  5. Step 5: Solve for x
    x = 3,156,000,654.54/57,061.28
  6. Step 6: Final answer
    x = 55,308.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.