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Finding the Fourth Proportional to 75,115.50, 112,520.16 and 43,433.16

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Solution

The fourth proportional to 75,115.50, 112,520.16 and 43,433.16 is: 65,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,115.50 : 112,520.16 = 43,433.16 : x
  2. Step 2: Convert to fraction form
    75,115.50/112,520.16 = 43,433.16/x
  3. Step 3: Cross multiply
    75,115.50x = 112,520.16 × 43,433.16
  4. Step 4: Simplify right side
    75,115.50x = 4,887,106,112.51
  5. Step 5: Solve for x
    x = 4,887,106,112.51/75,115.50
  6. Step 6: Final answer
    x = 65,061.22

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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.