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Finding the Fourth Proportional to 81,370.98, 112,295.16 and 45,560.68

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Solution

The fourth proportional to 81,370.98, 112,295.16 and 45,560.68 is: 62,875.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,370.98 : 112,295.16 = 45,560.68 : x
  2. Step 2: Convert to fraction form
    81,370.98/112,295.16 = 45,560.68/x
  3. Step 3: Cross multiply
    81,370.98x = 112,295.16 × 45,560.68
  4. Step 4: Simplify right side
    81,370.98x = 5,116,243,569.57
  5. Step 5: Solve for x
    x = 5,116,243,569.57/81,370.98
  6. Step 6: Final answer
    x = 62,875.53

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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.