Home / 71,389.50-98,521.44-39,557.70

Finding the Fourth Proportional to 71,389.50, 98,521.44 and 39,557.70

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Solution

The fourth proportional to 71,389.50, 98,521.44 and 39,557.70 is: 54,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.50 : 98,521.44 = 39,557.70 : x
  2. Step 2: Convert to fraction form
    71,389.50/98,521.44 = 39,557.70/x
  3. Step 3: Cross multiply
    71,389.50x = 98,521.44 × 39,557.70
  4. Step 4: Simplify right side
    71,389.50x = 3,897,281,567.09
  5. Step 5: Solve for x
    x = 3,897,281,567.09/71,389.50
  6. Step 6: Final answer
    x = 54,591.80

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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.