Home / 74,508.20-102,813.54-42,678.44

Finding the Fourth Proportional to 74,508.20, 102,813.54 and 42,678.44

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Solution

The fourth proportional to 74,508.20, 102,813.54 and 42,678.44 is: 58,891.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,508.20 : 102,813.54 = 42,678.44 : x
  2. Step 2: Convert to fraction form
    74,508.20/102,813.54 = 42,678.44/x
  3. Step 3: Cross multiply
    74,508.20x = 102,813.54 × 42,678.44
  4. Step 4: Simplify right side
    74,508.20x = 4,387,921,498.08
  5. Step 5: Solve for x
    x = 4,387,921,498.08/74,508.20
  6. Step 6: Final answer
    x = 58,891.79

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1.5x scale

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.