Home / 74,180.16-102,372.72-42,359.28

Finding the Fourth Proportional to 74,180.16, 102,372.72 and 42,359.28

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Solution

The fourth proportional to 74,180.16, 102,372.72 and 42,359.28 is: 58,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,180.16 : 102,372.72 = 42,359.28 : x
  2. Step 2: Convert to fraction form
    74,180.16/102,372.72 = 42,359.28/x
  3. Step 3: Cross multiply
    74,180.16x = 102,372.72 × 42,359.28
  4. Step 4: Simplify right side
    74,180.16x = 4,336,434,710.84
  5. Step 5: Solve for x
    x = 4,336,434,710.84/74,180.16
  6. Step 6: Final answer
    x = 58,458.15

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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.