Home / 80,611.33-111,252.63-48,779.53

Finding the Fourth Proportional to 80,611.33, 111,252.63 and 48,779.53

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Solution

The fourth proportional to 80,611.33, 111,252.63 and 48,779.53 is: 67,321.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,611.33 : 111,252.63 = 48,779.53 : x
  2. Step 2: Convert to fraction form
    80,611.33/111,252.63 = 48,779.53/x
  3. Step 3: Cross multiply
    80,611.33x = 111,252.63 × 48,779.53
  4. Step 4: Simplify right side
    80,611.33x = 5,426,851,002.66
  5. Step 5: Solve for x
    x = 5,426,851,002.66/80,611.33
  6. Step 6: Final answer
    x = 67,321.19

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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.