Home / 71,179.20-98,225.60-39,347.20

Finding the Fourth Proportional to 71,179.20, 98,225.60 and 39,347.20

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Solution

The fourth proportional to 71,179.20, 98,225.60 and 39,347.20 is: 54,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,179.20 : 98,225.60 = 39,347.20 : x
  2. Step 2: Convert to fraction form
    71,179.20/98,225.60 = 39,347.20/x
  3. Step 3: Cross multiply
    71,179.20x = 98,225.60 × 39,347.20
  4. Step 4: Simplify right side
    71,179.20x = 3,864,902,328.32
  5. Step 5: Solve for x
    x = 3,864,902,328.32/71,179.20
  6. Step 6: Final answer
    x = 54,298.20

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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.