Home / 68,407.11-94,417.53-40,121.91

Finding the Fourth Proportional to 68,407.11, 94,417.53 and 40,121.91

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Solution

The fourth proportional to 68,407.11, 94,417.53 and 40,121.91 is: 55,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,407.11 : 94,417.53 = 40,121.91 : x
  2. Step 2: Convert to fraction form
    68,407.11/94,417.53 = 40,121.91/x
  3. Step 3: Cross multiply
    68,407.11x = 94,417.53 × 40,121.91
  4. Step 4: Simplify right side
    68,407.11x = 3,788,211,641.08
  5. Step 5: Solve for x
    x = 3,788,211,641.08/68,407.11
  6. Step 6: Final answer
    x = 55,377.45

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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.