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Finding the Fourth Proportional to 85,065.60, 127,598.40 and 55,516.80

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Solution

The fourth proportional to 85,065.60, 127,598.40 and 55,516.80 is: 83,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,065.60 : 127,598.40 = 55,516.80 : x
  2. Step 2: Convert to fraction form
    85,065.60/127,598.40 = 55,516.80/x
  3. Step 3: Cross multiply
    85,065.60x = 127,598.40 × 55,516.80
  4. Step 4: Simplify right side
    85,065.60x = 7,083,854,853.12
  5. Step 5: Solve for x
    x = 7,083,854,853.12/85,065.60
  6. Step 6: Final answer
    x = 83,275.20

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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.