Home / 81,240.32-112,122.09-45,432.35

Finding the Fourth Proportional to 81,240.32, 112,122.09 and 45,432.35

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Solution

The fourth proportional to 81,240.32, 112,122.09 and 45,432.35 is: 62,702.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.32 : 112,122.09 = 45,432.35 : x
  2. Step 2: Convert to fraction form
    81,240.32/112,122.09 = 45,432.35/x
  3. Step 3: Cross multiply
    81,240.32x = 112,122.09 × 45,432.35
  4. Step 4: Simplify right side
    81,240.32x = 5,093,970,035.61
  5. Step 5: Solve for x
    x = 5,093,970,035.61/81,240.32
  6. Step 6: Final answer
    x = 62,702.49

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1.5x scale

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.