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Finding the Fourth Proportional to 67,280.64, 101,271.84 and 57,132.96

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Solution

The fourth proportional to 67,280.64, 101,271.84 and 57,132.96 is: 85,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,280.64 : 101,271.84 = 57,132.96 : x
  2. Step 2: Convert to fraction form
    67,280.64/101,271.84 = 57,132.96/x
  3. Step 3: Cross multiply
    67,280.64x = 101,271.84 × 57,132.96
  4. Step 4: Simplify right side
    67,280.64x = 5,785,959,983.85
  5. Step 5: Solve for x
    x = 5,785,959,983.85/67,280.64
  6. Step 6: Final answer
    x = 85,997.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.