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Finding the Fourth Proportional to 99,278.11, 137,023.71 and 58,984.11

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Solution

The fourth proportional to 99,278.11, 137,023.71 and 58,984.11 is: 81,409.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,278.11 : 137,023.71 = 58,984.11 : x
  2. Step 2: Convert to fraction form
    99,278.11/137,023.71 = 58,984.11/x
  3. Step 3: Cross multiply
    99,278.11x = 137,023.71 × 58,984.11
  4. Step 4: Simplify right side
    99,278.11x = 8,082,221,969.48
  5. Step 5: Solve for x
    x = 8,082,221,969.48/99,278.11
  6. Step 6: Final answer
    x = 81,409.91

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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.