Home / 85,510.14-128,265.21-23,179.02

Finding the Fourth Proportional to 85,510.14, 128,265.21 and 23,179.02

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Solution

The fourth proportional to 85,510.14, 128,265.21 and 23,179.02 is: 34,768.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,510.14 : 128,265.21 = 23,179.02 : x
  2. Step 2: Convert to fraction form
    85,510.14/128,265.21 = 23,179.02/x
  3. Step 3: Cross multiply
    85,510.14x = 128,265.21 × 23,179.02
  4. Step 4: Simplify right side
    85,510.14x = 2,973,061,867.89
  5. Step 5: Solve for x
    x = 2,973,061,867.89/85,510.14
  6. Step 6: Final answer
    x = 34,768.53

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Similar ratio
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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.