Home / 84,321.02-126,468.74-31,718.18

Finding the Fourth Proportional to 84,321.02, 126,468.74 and 31,718.18

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Solution

The fourth proportional to 84,321.02, 126,468.74 and 31,718.18 is: 47,572.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,321.02 : 126,468.74 = 31,718.18 : x
  2. Step 2: Convert to fraction form
    84,321.02/126,468.74 = 31,718.18/x
  3. Step 3: Cross multiply
    84,321.02x = 126,468.74 × 31,718.18
  4. Step 4: Simplify right side
    84,321.02x = 4,011,358,259.69
  5. Step 5: Solve for x
    x = 4,011,358,259.69/84,321.02
  6. Step 6: Final answer
    x = 47,572.46

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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.