Home / 71,278.24-98,362.56-39,445.28

Finding the Fourth Proportional to 71,278.24, 98,362.56 and 39,445.28

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Solution

The fourth proportional to 71,278.24, 98,362.56 and 39,445.28 is: 54,433.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,278.24 : 98,362.56 = 39,445.28 : x
  2. Step 2: Convert to fraction form
    71,278.24/98,362.56 = 39,445.28/x
  3. Step 3: Cross multiply
    71,278.24x = 98,362.56 × 39,445.28
  4. Step 4: Simplify right side
    71,278.24x = 3,879,938,720.72
  5. Step 5: Solve for x
    x = 3,879,938,720.72/71,278.24
  6. Step 6: Final answer
    x = 54,433.71

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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.