Home / 74,387.84-102,630.24-42,118.04

Finding the Fourth Proportional to 74,387.84, 102,630.24 and 42,118.04

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Solution

The fourth proportional to 74,387.84, 102,630.24 and 42,118.04 is: 58,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,387.84 : 102,630.24 = 42,118.04 : x
  2. Step 2: Convert to fraction form
    74,387.84/102,630.24 = 42,118.04/x
  3. Step 3: Cross multiply
    74,387.84x = 102,630.24 × 42,118.04
  4. Step 4: Simplify right side
    74,387.84x = 4,322,584,810.11
  5. Step 5: Solve for x
    x = 4,322,584,810.11/74,387.84
  6. Step 6: Final answer
    x = 58,108.76

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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.