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Finding the Fourth Proportional to 67,612.53, 100,977.69 and 57,509.61

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Solution

The fourth proportional to 67,612.53, 100,977.69 and 57,509.61 is: 85,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,612.53 : 100,977.69 = 57,509.61 : x
  2. Step 2: Convert to fraction form
    67,612.53/100,977.69 = 57,509.61/x
  3. Step 3: Cross multiply
    67,612.53x = 100,977.69 × 57,509.61
  4. Step 4: Simplify right side
    67,612.53x = 5,807,187,407.60
  5. Step 5: Solve for x
    x = 5,807,187,407.60/67,612.53
  6. Step 6: Final answer
    x = 85,889.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.