Home / 74,909.30-112,221.39-39,865.46

Finding the Fourth Proportional to 74,909.30, 112,221.39 and 39,865.46

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Solution

The fourth proportional to 74,909.30, 112,221.39 and 39,865.46 is: 59,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,909.30 : 112,221.39 = 39,865.46 : x
  2. Step 2: Convert to fraction form
    74,909.30/112,221.39 = 39,865.46/x
  3. Step 3: Cross multiply
    74,909.30x = 112,221.39 × 39,865.46
  4. Step 4: Simplify right side
    74,909.30x = 4,473,757,334.19
  5. Step 5: Solve for x
    x = 4,473,757,334.19/74,909.30
  6. Step 6: Final answer
    x = 59,722.32

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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.