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Finding the Fourth Proportional to 81,403.44, 112,342.32 and 45,592.80

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Solution

The fourth proportional to 81,403.44, 112,342.32 and 45,592.80 is: 62,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.44 : 112,342.32 = 45,592.80 : x
  2. Step 2: Convert to fraction form
    81,403.44/112,342.32 = 45,592.80/x
  3. Step 3: Cross multiply
    81,403.44x = 112,342.32 × 45,592.80
  4. Step 4: Simplify right side
    81,403.44x = 5,122,000,927.30
  5. Step 5: Solve for x
    x = 5,122,000,927.30/81,403.44
  6. Step 6: Final answer
    x = 62,921.19

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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.