Home / 75,186.42-112,744.31-43,605.45

Finding the Fourth Proportional to 75,186.42, 112,744.31 and 43,605.45

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Solution

The fourth proportional to 75,186.42, 112,744.31 and 43,605.45 is: 65,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,186.42 : 112,744.31 = 43,605.45 : x
  2. Step 2: Convert to fraction form
    75,186.42/112,744.31 = 43,605.45/x
  3. Step 3: Cross multiply
    75,186.42x = 112,744.31 × 43,605.45
  4. Step 4: Simplify right side
    75,186.42x = 4,916,266,154.46
  5. Step 5: Solve for x
    x = 4,916,266,154.46/75,186.42
  6. Step 6: Final answer
    x = 65,387.69

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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.