Home / 71,222.25-98,278.20-39,386.82

Finding the Fourth Proportional to 71,222.25, 98,278.20 and 39,386.82

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Solution

The fourth proportional to 71,222.25, 98,278.20 and 39,386.82 is: 54,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,222.25 : 98,278.20 = 39,386.82 : x
  2. Step 2: Convert to fraction form
    71,222.25/98,278.20 = 39,386.82/x
  3. Step 3: Cross multiply
    71,222.25x = 98,278.20 × 39,386.82
  4. Step 4: Simplify right side
    71,222.25x = 3,870,865,773.32
  5. Step 5: Solve for x
    x = 3,870,865,773.32/71,222.25
  6. Step 6: Final answer
    x = 54,349.11

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1.5x scale

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.