Home / 71,987.76-99,350.01-40,159.62

Finding the Fourth Proportional to 71,987.76, 99,350.01 and 40,159.62

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Solution

The fourth proportional to 71,987.76, 99,350.01 and 40,159.62 is: 55,424.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,987.76 : 99,350.01 = 40,159.62 : x
  2. Step 2: Convert to fraction form
    71,987.76/99,350.01 = 40,159.62/x
  3. Step 3: Cross multiply
    71,987.76x = 99,350.01 × 40,159.62
  4. Step 4: Simplify right side
    71,987.76x = 3,989,858,648.60
  5. Step 5: Solve for x
    x = 3,989,858,648.60/71,987.76
  6. Step 6: Final answer
    x = 55,424.13

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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.