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Finding the Fourth Proportional to 83,370.72, 115,054.40 and 45,645.76

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Solution

The fourth proportional to 83,370.72, 115,054.40 and 45,645.76 is: 62,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,370.72 : 115,054.40 = 45,645.76 : x
  2. Step 2: Convert to fraction form
    83,370.72/115,054.40 = 45,645.76/x
  3. Step 3: Cross multiply
    83,370.72x = 115,054.40 × 45,645.76
  4. Step 4: Simplify right side
    83,370.72x = 5,251,745,529.34
  5. Step 5: Solve for x
    x = 5,251,745,529.34/83,370.72
  6. Step 6: Final answer
    x = 62,992.69

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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.