Home / 71,276.28-98,360.40-39,445.38

Finding the Fourth Proportional to 71,276.28, 98,360.40 and 39,445.38

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Solution

The fourth proportional to 71,276.28, 98,360.40 and 39,445.38 is: 54,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,276.28 : 98,360.40 = 39,445.38 : x
  2. Step 2: Convert to fraction form
    71,276.28/98,360.40 = 39,445.38/x
  3. Step 3: Cross multiply
    71,276.28x = 98,360.40 × 39,445.38
  4. Step 4: Simplify right side
    71,276.28x = 3,879,863,354.95
  5. Step 5: Solve for x
    x = 3,879,863,354.95/71,276.28
  6. Step 6: Final answer
    x = 54,434.14

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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.