Home / 85,147.30-117,506.92-47,421.55

Finding the Fourth Proportional to 85,147.30, 117,506.92 and 47,421.55

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Solution

The fourth proportional to 85,147.30, 117,506.92 and 47,421.55 is: 65,443.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,147.30 : 117,506.92 = 47,421.55 : x
  2. Step 2: Convert to fraction form
    85,147.30/117,506.92 = 47,421.55/x
  3. Step 3: Cross multiply
    85,147.30x = 117,506.92 × 47,421.55
  4. Step 4: Simplify right side
    85,147.30x = 5,572,360,282.13
  5. Step 5: Solve for x
    x = 5,572,360,282.13/85,147.30
  6. Step 6: Final answer
    x = 65,443.77

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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.