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Finding the Fourth Proportional to 85,959.52, 128,922 and 23,621.92

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Solution

The fourth proportional to 85,959.52, 128,922 and 23,621.92 is: 35,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,959.52 : 128,922 = 23,621.92 : x
  2. Step 2: Convert to fraction form
    85,959.52/128,922 = 23,621.92/x
  3. Step 3: Cross multiply
    85,959.52x = 128,922 × 23,621.92
  4. Step 4: Simplify right side
    85,959.52x = 3,045,385,170.24
  5. Step 5: Solve for x
    x = 3,045,385,170.24/85,959.52
  6. Step 6: Final answer
    x = 35,428.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.