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Finding the Fourth Proportional to 75,320.64, 103,945.74 and 45,110.88

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Solution

The fourth proportional to 75,320.64, 103,945.74 and 45,110.88 is: 62,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,320.64 : 103,945.74 = 45,110.88 : x
  2. Step 2: Convert to fraction form
    75,320.64/103,945.74 = 45,110.88/x
  3. Step 3: Cross multiply
    75,320.64x = 103,945.74 × 45,110.88
  4. Step 4: Simplify right side
    75,320.64x = 4,689,083,803.65
  5. Step 5: Solve for x
    x = 4,689,083,803.65/75,320.64
  6. Step 6: Final answer
    x = 62,254.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.