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Finding the Fourth Proportional to 42,779.70, 64,010.62 and 26,910.62

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Solution

The fourth proportional to 42,779.70, 64,010.62 and 26,910.62 is: 40,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.70 : 64,010.62 = 26,910.62 : x
  2. Step 2: Convert to fraction form
    42,779.70/64,010.62 = 26,910.62/x
  3. Step 3: Cross multiply
    42,779.70x = 64,010.62 × 26,910.62
  4. Step 4: Simplify right side
    42,779.70x = 1,722,565,470.78
  5. Step 5: Solve for x
    x = 1,722,565,470.78/42,779.70
  6. Step 6: Final answer
    x = 40,265.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.