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Finding the Fourth Proportional to 81,407.60, 112,339.16 and 45,597.04

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Solution

The fourth proportional to 81,407.60, 112,339.16 and 45,597.04 is: 62,922.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,407.60 : 112,339.16 = 45,597.04 : x
  2. Step 2: Convert to fraction form
    81,407.60/112,339.16 = 45,597.04/x
  3. Step 3: Cross multiply
    81,407.60x = 112,339.16 × 45,597.04
  4. Step 4: Simplify right side
    81,407.60x = 5,122,333,172.09
  5. Step 5: Solve for x
    x = 5,122,333,172.09/81,407.60
  6. Step 6: Final answer
    x = 62,922.05

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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.