Home / 74,140.17-102,313.91-40,148.65

Finding the Fourth Proportional to 74,140.17, 102,313.91 and 40,148.65

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Solution

The fourth proportional to 74,140.17, 102,313.91 and 40,148.65 is: 55,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,140.17 : 102,313.91 = 40,148.65 : x
  2. Step 2: Convert to fraction form
    74,140.17/102,313.91 = 40,148.65/x
  3. Step 3: Cross multiply
    74,140.17x = 102,313.91 × 40,148.65
  4. Step 4: Simplify right side
    74,140.17x = 4,107,765,718.88
  5. Step 5: Solve for x
    x = 4,107,765,718.88/74,140.17
  6. Step 6: Final answer
    x = 55,405.40

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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.