Home / 71,209.50-98,267.49-39,378.66

Finding the Fourth Proportional to 71,209.50, 98,267.49 and 39,378.66

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Solution

The fourth proportional to 71,209.50, 98,267.49 and 39,378.66 is: 54,341.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,209.50 : 98,267.49 = 39,378.66 : x
  2. Step 2: Convert to fraction form
    71,209.50/98,267.49 = 39,378.66/x
  3. Step 3: Cross multiply
    71,209.50x = 98,267.49 × 39,378.66
  4. Step 4: Simplify right side
    71,209.50x = 3,869,642,077.76
  5. Step 5: Solve for x
    x = 3,869,642,077.76/71,209.50
  6. Step 6: Final answer
    x = 54,341.65

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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.