Home / 71,220.20-98,279.89-38,948.45

Finding the Fourth Proportional to 71,220.20, 98,279.89 and 38,948.45

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Solution

The fourth proportional to 71,220.20, 98,279.89 and 38,948.45 is: 53,746.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.20 : 98,279.89 = 38,948.45 : x
  2. Step 2: Convert to fraction form
    71,220.20/98,279.89 = 38,948.45/x
  3. Step 3: Cross multiply
    71,220.20x = 98,279.89 × 38,948.45
  4. Step 4: Simplify right side
    71,220.20x = 3,827,849,381.67
  5. Step 5: Solve for x
    x = 3,827,849,381.67/71,220.20
  6. Step 6: Final answer
    x = 53,746.68

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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.