Home / 85,867.80-128,799.67-23,538.30

Finding the Fourth Proportional to 85,867.80, 128,799.67 and 23,538.30

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Solution

The fourth proportional to 85,867.80, 128,799.67 and 23,538.30 is: 35,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,867.80 : 128,799.67 = 23,538.30 : x
  2. Step 2: Convert to fraction form
    85,867.80/128,799.67 = 23,538.30/x
  3. Step 3: Cross multiply
    85,867.80x = 128,799.67 × 23,538.30
  4. Step 4: Simplify right side
    85,867.80x = 3,031,725,272.36
  5. Step 5: Solve for x
    x = 3,031,725,272.36/85,867.80
  6. Step 6: Final answer
    x = 35,306.89

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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.