Home / 71,665.19-98,898.46-39,400.35

Finding the Fourth Proportional to 71,665.19, 98,898.46 and 39,400.35

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Solution

The fourth proportional to 71,665.19, 98,898.46 and 39,400.35 is: 54,372.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,665.19 : 98,898.46 = 39,400.35 : x
  2. Step 2: Convert to fraction form
    71,665.19/98,898.46 = 39,400.35/x
  3. Step 3: Cross multiply
    71,665.19x = 98,898.46 × 39,400.35
  4. Step 4: Simplify right side
    71,665.19x = 3,896,633,938.46
  5. Step 5: Solve for x
    x = 3,896,633,938.46/71,665.19
  6. Step 6: Final answer
    x = 54,372.76

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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.