Home / 85,718.76-118,266.30-55,456.15

Finding the Fourth Proportional to 85,718.76, 118,266.30 and 55,456.15

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Solution

The fourth proportional to 85,718.76, 118,266.30 and 55,456.15 is: 76,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,718.76 : 118,266.30 = 55,456.15 : x
  2. Step 2: Convert to fraction form
    85,718.76/118,266.30 = 55,456.15/x
  3. Step 3: Cross multiply
    85,718.76x = 118,266.30 × 55,456.15
  4. Step 4: Simplify right side
    85,718.76x = 6,558,593,672.75
  5. Step 5: Solve for x
    x = 6,558,593,672.75/85,718.76
  6. Step 6: Final answer
    x = 76,512.93

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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.