Home / 40,876.48-61,281.65-12,782.08

Finding the Fourth Proportional to 40,876.48, 61,281.65 and 12,782.08

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Solution

The fourth proportional to 40,876.48, 61,281.65 and 12,782.08 is: 19,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,876.48 : 61,281.65 = 12,782.08 : x
  2. Step 2: Convert to fraction form
    40,876.48/61,281.65 = 12,782.08/x
  3. Step 3: Cross multiply
    40,876.48x = 61,281.65 × 12,782.08
  4. Step 4: Simplify right side
    40,876.48x = 783,306,952.83
  5. Step 5: Solve for x
    x = 783,306,952.83/40,876.48
  6. Step 6: Final answer
    x = 19,162.78

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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.