Home / 74,719.62-112,109.40-30,349.80

Finding the Fourth Proportional to 74,719.62, 112,109.40 and 30,349.80

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Solution

The fourth proportional to 74,719.62, 112,109.40 and 30,349.80 is: 45,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,719.62 : 112,109.40 = 30,349.80 : x
  2. Step 2: Convert to fraction form
    74,719.62/112,109.40 = 30,349.80/x
  3. Step 3: Cross multiply
    74,719.62x = 112,109.40 × 30,349.80
  4. Step 4: Simplify right side
    74,719.62x = 3,402,497,868.12
  5. Step 5: Solve for x
    x = 3,402,497,868.12/74,719.62
  6. Step 6: Final answer
    x = 45,536.87

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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.