Home / 40,875.50-61,279.86-21,159.74

Finding the Fourth Proportional to 40,875.50, 61,279.86 and 21,159.74

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Solution

The fourth proportional to 40,875.50, 61,279.86 and 21,159.74 is: 31,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,875.50 : 61,279.86 = 21,159.74 : x
  2. Step 2: Convert to fraction form
    40,875.50/61,279.86 = 21,159.74/x
  3. Step 3: Cross multiply
    40,875.50x = 61,279.86 × 21,159.74
  4. Step 4: Simplify right side
    40,875.50x = 1,296,665,904.84
  5. Step 5: Solve for x
    x = 1,296,665,904.84/40,875.50
  6. Step 6: Final answer
    x = 31,722.33

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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.