Home / 75,111.18-112,626.36-30,109.95

Finding the Fourth Proportional to 75,111.18, 112,626.36 and 30,109.95

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Solution

The fourth proportional to 75,111.18, 112,626.36 and 30,109.95 is: 45,148.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,111.18 : 112,626.36 = 30,109.95 : x
  2. Step 2: Convert to fraction form
    75,111.18/112,626.36 = 30,109.95/x
  3. Step 3: Cross multiply
    75,111.18x = 112,626.36 × 30,109.95
  4. Step 4: Simplify right side
    75,111.18x = 3,391,174,068.28
  5. Step 5: Solve for x
    x = 3,391,174,068.28/75,111.18
  6. Step 6: Final answer
    x = 45,148.73

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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.