Home / 84,424.16-126,552.72-39,972.80

Finding the Fourth Proportional to 84,424.16, 126,552.72 and 39,972.80

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Solution

The fourth proportional to 84,424.16, 126,552.72 and 39,972.80 is: 59,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,424.16 : 126,552.72 = 39,972.80 : x
  2. Step 2: Convert to fraction form
    84,424.16/126,552.72 = 39,972.80/x
  3. Step 3: Cross multiply
    84,424.16x = 126,552.72 × 39,972.80
  4. Step 4: Simplify right side
    84,424.16x = 5,058,666,566.02
  5. Step 5: Solve for x
    x = 5,058,666,566.02/84,424.16
  6. Step 6: Final answer
    x = 59,919.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.