Home / 84,621.74-126,899.79-45,157.32

Finding the Fourth Proportional to 84,621.74, 126,899.79 and 45,157.32

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Solution

The fourth proportional to 84,621.74, 126,899.79 and 45,157.32 is: 67,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,621.74 : 126,899.79 = 45,157.32 : x
  2. Step 2: Convert to fraction form
    84,621.74/126,899.79 = 45,157.32/x
  3. Step 3: Cross multiply
    84,621.74x = 126,899.79 × 45,157.32
  4. Step 4: Simplify right side
    84,621.74x = 5,730,454,424.96
  5. Step 5: Solve for x
    x = 5,730,454,424.96/84,621.74
  6. Step 6: Final answer
    x = 67,718.47

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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.