Home / 71,153.20-98,187.58-39,320.20

Finding the Fourth Proportional to 71,153.20, 98,187.58 and 39,320.20

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Solution

The fourth proportional to 71,153.20, 98,187.58 and 39,320.20 is: 54,259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,153.20 : 98,187.58 = 39,320.20 : x
  2. Step 2: Convert to fraction form
    71,153.20/98,187.58 = 39,320.20/x
  3. Step 3: Cross multiply
    71,153.20x = 98,187.58 × 39,320.20
  4. Step 4: Simplify right side
    71,153.20x = 3,860,754,595.58
  5. Step 5: Solve for x
    x = 3,860,754,595.58/71,153.20
  6. Step 6: Final answer
    x = 54,259.75

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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.