Home / 75,272.30-112,908.45-47,278.70

Finding the Fourth Proportional to 75,272.30, 112,908.45 and 47,278.70

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Solution

The fourth proportional to 75,272.30, 112,908.45 and 47,278.70 is: 70,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,272.30 : 112,908.45 = 47,278.70 : x
  2. Step 2: Convert to fraction form
    75,272.30/112,908.45 = 47,278.70/x
  3. Step 3: Cross multiply
    75,272.30x = 112,908.45 × 47,278.70
  4. Step 4: Simplify right side
    75,272.30x = 5,338,164,735.02
  5. Step 5: Solve for x
    x = 5,338,164,735.02/75,272.30
  6. Step 6: Final answer
    x = 70,918.05

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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.