Home / 81,412.35-112,356.03-45,609.72

Finding the Fourth Proportional to 81,412.35, 112,356.03 and 45,609.72

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Solution

The fourth proportional to 81,412.35, 112,356.03 and 45,609.72 is: 62,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.35 : 112,356.03 = 45,609.72 : x
  2. Step 2: Convert to fraction form
    81,412.35/112,356.03 = 45,609.72/x
  3. Step 3: Cross multiply
    81,412.35x = 112,356.03 × 45,609.72
  4. Step 4: Simplify right side
    81,412.35x = 5,124,527,068.61
  5. Step 5: Solve for x
    x = 5,124,527,068.61/81,412.35
  6. Step 6: Final answer
    x = 62,945.33

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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.