Home / 85,123.28-127,684.92-43,547.60

Finding the Fourth Proportional to 85,123.28, 127,684.92 and 43,547.60

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Solution

The fourth proportional to 85,123.28, 127,684.92 and 43,547.60 is: 65,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,123.28 : 127,684.92 = 43,547.60 : x
  2. Step 2: Convert to fraction form
    85,123.28/127,684.92 = 43,547.60/x
  3. Step 3: Cross multiply
    85,123.28x = 127,684.92 × 43,547.60
  4. Step 4: Simplify right side
    85,123.28x = 5,560,371,822.19
  5. Step 5: Solve for x
    x = 5,560,371,822.19/85,123.28
  6. Step 6: Final answer
    x = 65,321.40

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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.