Home / 71,219.35-98,278.70-38,947.55

Finding the Fourth Proportional to 71,219.35, 98,278.70 and 38,947.55

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Solution

The fourth proportional to 71,219.35, 98,278.70 and 38,947.55 is: 53,745.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,219.35 : 98,278.70 = 38,947.55 : x
  2. Step 2: Convert to fraction form
    71,219.35/98,278.70 = 38,947.55/x
  3. Step 3: Cross multiply
    71,219.35x = 98,278.70 × 38,947.55
  4. Step 4: Simplify right side
    71,219.35x = 3,827,714,582.19
  5. Step 5: Solve for x
    x = 3,827,714,582.19/71,219.35
  6. Step 6: Final answer
    x = 53,745.43

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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.