Home / 81,327.90-112,228.47-45,517.98

Finding the Fourth Proportional to 81,327.90, 112,228.47 and 45,517.98

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Solution

The fourth proportional to 81,327.90, 112,228.47 and 45,517.98 is: 62,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,327.90 : 112,228.47 = 45,517.98 : x
  2. Step 2: Convert to fraction form
    81,327.90/112,228.47 = 45,517.98/x
  3. Step 3: Cross multiply
    81,327.90x = 112,228.47 × 45,517.98
  4. Step 4: Simplify right side
    81,327.90x = 5,108,413,252.89
  5. Step 5: Solve for x
    x = 5,108,413,252.89/81,327.90
  6. Step 6: Final answer
    x = 62,812.56

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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.