Home / 85,060.20-127,590.36-38,258.40

Finding the Fourth Proportional to 85,060.20, 127,590.36 and 38,258.40

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Solution

The fourth proportional to 85,060.20, 127,590.36 and 38,258.40 is: 57,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,060.20 : 127,590.36 = 38,258.40 : x
  2. Step 2: Convert to fraction form
    85,060.20/127,590.36 = 38,258.40/x
  3. Step 3: Cross multiply
    85,060.20x = 127,590.36 × 38,258.40
  4. Step 4: Simplify right side
    85,060.20x = 4,881,403,029.02
  5. Step 5: Solve for x
    x = 4,881,403,029.02/85,060.20
  6. Step 6: Final answer
    x = 57,387.63

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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.