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Finding the Fourth Proportional to 81,409.60, 112,341.92 and 45,599.04

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Solution

The fourth proportional to 81,409.60, 112,341.92 and 45,599.04 is: 62,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,409.60 : 112,341.92 = 45,599.04 : x
  2. Step 2: Convert to fraction form
    81,409.60/112,341.92 = 45,599.04/x
  3. Step 3: Cross multiply
    81,409.60x = 112,341.92 × 45,599.04
  4. Step 4: Simplify right side
    81,409.60x = 5,122,683,703.76
  5. Step 5: Solve for x
    x = 5,122,683,703.76/81,409.60
  6. Step 6: Final answer
    x = 62,924.81

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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.