Home / 85,005.20-127,248.60-49,840.40

Finding the Fourth Proportional to 85,005.20, 127,248.60 and 49,840.40

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Solution

The fourth proportional to 85,005.20, 127,248.60 and 49,840.40 is: 74,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,005.20 : 127,248.60 = 49,840.40 : x
  2. Step 2: Convert to fraction form
    85,005.20/127,248.60 = 49,840.40/x
  3. Step 3: Cross multiply
    85,005.20x = 127,248.60 × 49,840.40
  4. Step 4: Simplify right side
    85,005.20x = 6,342,121,123.44
  5. Step 5: Solve for x
    x = 6,342,121,123.44/85,005.20
  6. Step 6: Final answer
    x = 74,608.63

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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.