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Finding the Fourth Proportional to 61,802.76, 85,279.96 and 40,282.68

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Solution

The fourth proportional to 61,802.76, 85,279.96 and 40,282.68 is: 55,584.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,802.76 : 85,279.96 = 40,282.68 : x
  2. Step 2: Convert to fraction form
    61,802.76/85,279.96 = 40,282.68/x
  3. Step 3: Cross multiply
    61,802.76x = 85,279.96 × 40,282.68
  4. Step 4: Simplify right side
    61,802.76x = 3,435,305,339.09
  5. Step 5: Solve for x
    x = 3,435,305,339.09/61,802.76
  6. Step 6: Final answer
    x = 55,584.98

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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.