Home / 75,031.50-103,529.12-42,765.49

Finding the Fourth Proportional to 75,031.50, 103,529.12 and 42,765.49

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Solution

The fourth proportional to 75,031.50, 103,529.12 and 42,765.49 is: 59,008.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,031.50 : 103,529.12 = 42,765.49 : x
  2. Step 2: Convert to fraction form
    75,031.50/103,529.12 = 42,765.49/x
  3. Step 3: Cross multiply
    75,031.50x = 103,529.12 × 42,765.49
  4. Step 4: Simplify right side
    75,031.50x = 4,427,473,546.07
  5. Step 5: Solve for x
    x = 4,427,473,546.07/75,031.50
  6. Step 6: Final answer
    x = 59,008.20

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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.