Home / 74,338.40-102,587.09-40,346.89

Finding the Fourth Proportional to 74,338.40, 102,587.09 and 40,346.89

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Solution

The fourth proportional to 74,338.40, 102,587.09 and 40,346.89 is: 55,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,338.40 : 102,587.09 = 40,346.89 : x
  2. Step 2: Convert to fraction form
    74,338.40/102,587.09 = 40,346.89/x
  3. Step 3: Cross multiply
    74,338.40x = 102,587.09 × 40,346.89
  4. Step 4: Simplify right side
    74,338.40x = 4,139,070,035.65
  5. Step 5: Solve for x
    x = 4,139,070,035.65/74,338.40
  6. Step 6: Final answer
    x = 55,678.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.