Home / 85,711.35-128,488.26-29,538.12

Finding the Fourth Proportional to 85,711.35, 128,488.26 and 29,538.12

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Solution

The fourth proportional to 85,711.35, 128,488.26 and 29,538.12 is: 44,280.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,711.35 : 128,488.26 = 29,538.12 : x
  2. Step 2: Convert to fraction form
    85,711.35/128,488.26 = 29,538.12/x
  3. Step 3: Cross multiply
    85,711.35x = 128,488.26 × 29,538.12
  4. Step 4: Simplify right side
    85,711.35x = 3,795,301,642.47
  5. Step 5: Solve for x
    x = 3,795,301,642.47/85,711.35
  6. Step 6: Final answer
    x = 44,280.04

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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.