Home / 99,276.72-136,992.60-58,979.76

Finding the Fourth Proportional to 99,276.72, 136,992.60 and 58,979.76

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Solution

The fourth proportional to 99,276.72, 136,992.60 and 58,979.76 is: 81,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,276.72 : 136,992.60 = 58,979.76 : x
  2. Step 2: Convert to fraction form
    99,276.72/136,992.60 = 58,979.76/x
  3. Step 3: Cross multiply
    99,276.72x = 136,992.60 × 58,979.76
  4. Step 4: Simplify right side
    99,276.72x = 8,079,790,669.78
  5. Step 5: Solve for x
    x = 8,079,790,669.78/99,276.72
  6. Step 6: Final answer
    x = 81,386.56

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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.