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Finding the Fourth Proportional to 125,047.56, 172,579.50 and 71,345.82

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Solution

The fourth proportional to 125,047.56, 172,579.50 and 71,345.82 is: 98,465.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,047.56 : 172,579.50 = 71,345.82 : x
  2. Step 2: Convert to fraction form
    125,047.56/172,579.50 = 71,345.82/x
  3. Step 3: Cross multiply
    125,047.56x = 172,579.50 × 71,345.82
  4. Step 4: Simplify right side
    125,047.56x = 12,312,825,942.69
  5. Step 5: Solve for x
    x = 12,312,825,942.69/125,047.56
  6. Step 6: Final answer
    x = 98,465.14

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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.