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Finding the Fourth Proportional to 65,291.39, 90,129.69 and 44,099.36

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Solution

The fourth proportional to 65,291.39, 90,129.69 and 44,099.36 is: 60,875.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,291.39 : 90,129.69 = 44,099.36 : x
  2. Step 2: Convert to fraction form
    65,291.39/90,129.69 = 44,099.36/x
  3. Step 3: Cross multiply
    65,291.39x = 90,129.69 × 44,099.36
  4. Step 4: Simplify right side
    65,291.39x = 3,974,661,195.35
  5. Step 5: Solve for x
    x = 3,974,661,195.35/65,291.39
  6. Step 6: Final answer
    x = 60,875.74

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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.