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Finding the Fourth Proportional to 85,258.72, 127,887.28 and 47,818.72

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Solution

The fourth proportional to 85,258.72, 127,887.28 and 47,818.72 is: 71,727.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,258.72 : 127,887.28 = 47,818.72 : x
  2. Step 2: Convert to fraction form
    85,258.72/127,887.28 = 47,818.72/x
  3. Step 3: Cross multiply
    85,258.72x = 127,887.28 × 47,818.72
  4. Step 4: Simplify right side
    85,258.72x = 6,115,406,033.88
  5. Step 5: Solve for x
    x = 6,115,406,033.88/85,258.72
  6. Step 6: Final answer
    x = 71,727.63

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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.