Home / 85,834.59-128,727.28-25,868.88

Finding the Fourth Proportional to 85,834.59, 128,727.28 and 25,868.88

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Solution

The fourth proportional to 85,834.59, 128,727.28 and 25,868.88 is: 38,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,834.59 : 128,727.28 = 25,868.88 : x
  2. Step 2: Convert to fraction form
    85,834.59/128,727.28 = 25,868.88/x
  3. Step 3: Cross multiply
    85,834.59x = 128,727.28 × 25,868.88
  4. Step 4: Simplify right side
    85,834.59x = 3,330,029,915.41
  5. Step 5: Solve for x
    x = 3,330,029,915.41/85,834.59
  6. Step 6: Final answer
    x = 38,795.90

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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.