Home / 85,701.06-128,521.44-25,711.62

Finding the Fourth Proportional to 85,701.06, 128,521.44 and 25,711.62

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Solution

The fourth proportional to 85,701.06, 128,521.44 and 25,711.62 is: 38,558.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,701.06 : 128,521.44 = 25,711.62 : x
  2. Step 2: Convert to fraction form
    85,701.06/128,521.44 = 25,711.62/x
  3. Step 3: Cross multiply
    85,701.06x = 128,521.44 × 25,711.62
  4. Step 4: Simplify right side
    85,701.06x = 3,304,494,427.13
  5. Step 5: Solve for x
    x = 3,304,494,427.13/85,701.06
  6. Step 6: Final answer
    x = 38,558.38

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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.