Home / 91,741.44-126,639.20-61,515.72

Finding the Fourth Proportional to 91,741.44, 126,639.20 and 61,515.72

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Solution

The fourth proportional to 91,741.44, 126,639.20 and 61,515.72 is: 84,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,741.44 : 126,639.20 = 61,515.72 : x
  2. Step 2: Convert to fraction form
    91,741.44/126,639.20 = 61,515.72/x
  3. Step 3: Cross multiply
    91,741.44x = 126,639.20 × 61,515.72
  4. Step 4: Simplify right side
    91,741.44x = 7,790,301,568.22
  5. Step 5: Solve for x
    x = 7,790,301,568.22/91,741.44
  6. Step 6: Final answer
    x = 84,915.84

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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.