Home / 66,506.30-91,778.65-38,211.92

Finding the Fourth Proportional to 66,506.30, 91,778.65 and 38,211.92

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Solution

The fourth proportional to 66,506.30, 91,778.65 and 38,211.92 is: 52,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.30 : 91,778.65 = 38,211.92 : x
  2. Step 2: Convert to fraction form
    66,506.30/91,778.65 = 38,211.92/x
  3. Step 3: Cross multiply
    66,506.30x = 91,778.65 × 38,211.92
  4. Step 4: Simplify right side
    66,506.30x = 3,507,037,877.08
  5. Step 5: Solve for x
    x = 3,507,037,877.08/66,506.30
  6. Step 6: Final answer
    x = 52,732.42

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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.