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Finding the Fourth Proportional to 75,443.32, 113,150.40 and 71,696.80

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Solution

The fourth proportional to 75,443.32, 113,150.40 and 71,696.80 is: 107,531.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,443.32 : 113,150.40 = 71,696.80 : x
  2. Step 2: Convert to fraction form
    75,443.32/113,150.40 = 71,696.80/x
  3. Step 3: Cross multiply
    75,443.32x = 113,150.40 × 71,696.80
  4. Step 4: Simplify right side
    75,443.32x = 8,112,521,598.72
  5. Step 5: Solve for x
    x = 8,112,521,598.72/75,443.32
  6. Step 6: Final answer
    x = 107,531.34

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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.