Home / 74,022.40-102,150.08-40,488

Finding the Fourth Proportional to 74,022.40, 102,150.08 and 40,488

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Solution

The fourth proportional to 74,022.40, 102,150.08 and 40,488 is: 55,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,022.40 : 102,150.08 = 40,488 : x
  2. Step 2: Convert to fraction form
    74,022.40/102,150.08 = 40,488/x
  3. Step 3: Cross multiply
    74,022.40x = 102,150.08 × 40,488
  4. Step 4: Simplify right side
    74,022.40x = 4,135,852,439.04
  5. Step 5: Solve for x
    x = 4,135,852,439.04/74,022.40
  6. Step 6: Final answer
    x = 55,872.98

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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.