Home / 81,845.47-112,947.92-48,311.47

Finding the Fourth Proportional to 81,845.47, 112,947.92 and 48,311.47

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Solution

The fourth proportional to 81,845.47, 112,947.92 and 48,311.47 is: 66,670.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,845.47 : 112,947.92 = 48,311.47 : x
  2. Step 2: Convert to fraction form
    81,845.47/112,947.92 = 48,311.47/x
  3. Step 3: Cross multiply
    81,845.47x = 112,947.92 × 48,311.47
  4. Step 4: Simplify right side
    81,845.47x = 5,456,679,807.09
  5. Step 5: Solve for x
    x = 5,456,679,807.09/81,845.47
  6. Step 6: Final answer
    x = 66,670.52

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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.