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Finding the Fourth Proportional to 85,108.64, 127,578.48 and 43,462.56

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Solution

The fourth proportional to 85,108.64, 127,578.48 and 43,462.56 is: 65,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,108.64 : 127,578.48 = 43,462.56 : x
  2. Step 2: Convert to fraction form
    85,108.64/127,578.48 = 43,462.56/x
  3. Step 3: Cross multiply
    85,108.64x = 127,578.48 × 43,462.56
  4. Step 4: Simplify right side
    85,108.64x = 5,544,887,341.71
  5. Step 5: Solve for x
    x = 5,544,887,341.71/85,108.64
  6. Step 6: Final answer
    x = 65,150.70

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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.