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Finding the Fourth Proportional to 81,179.76, 112,030.28 and 45,373.68

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Solution

The fourth proportional to 81,179.76, 112,030.28 and 45,373.68 is: 62,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,179.76 : 112,030.28 = 45,373.68 : x
  2. Step 2: Convert to fraction form
    81,179.76/112,030.28 = 45,373.68/x
  3. Step 3: Cross multiply
    81,179.76x = 112,030.28 × 45,373.68
  4. Step 4: Simplify right side
    81,179.76x = 5,083,226,075.03
  5. Step 5: Solve for x
    x = 5,083,226,075.03/81,179.76
  6. Step 6: Final answer
    x = 62,616.91

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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.