Home / 81,485.13-112,449.33-45,675.13

Finding the Fourth Proportional to 81,485.13, 112,449.33 and 45,675.13

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Solution

The fourth proportional to 81,485.13, 112,449.33 and 45,675.13 is: 63,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.13 : 112,449.33 = 45,675.13 : x
  2. Step 2: Convert to fraction form
    81,485.13/112,449.33 = 45,675.13/x
  3. Step 3: Cross multiply
    81,485.13x = 112,449.33 × 45,675.13
  4. Step 4: Simplify right side
    81,485.13x = 5,136,137,766.16
  5. Step 5: Solve for x
    x = 5,136,137,766.16/81,485.13
  6. Step 6: Final answer
    x = 63,031.60

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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.