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Finding the Fourth Proportional to 65,282.58, 90,085.04 and 36,987.66

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Solution

The fourth proportional to 65,282.58, 90,085.04 and 36,987.66 is: 51,040.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,282.58 : 90,085.04 = 36,987.66 : x
  2. Step 2: Convert to fraction form
    65,282.58/90,085.04 = 36,987.66/x
  3. Step 3: Cross multiply
    65,282.58x = 90,085.04 × 36,987.66
  4. Step 4: Simplify right side
    65,282.58x = 3,332,034,830.61
  5. Step 5: Solve for x
    x = 3,332,034,830.61/65,282.58
  6. Step 6: Final answer
    x = 51,040.18

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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.