Home / 85,531.08-128,296.59-38,133.93

Finding the Fourth Proportional to 85,531.08, 128,296.59 and 38,133.93

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Solution

The fourth proportional to 85,531.08, 128,296.59 and 38,133.93 is: 57,200.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531.08 : 128,296.59 = 38,133.93 : x
  2. Step 2: Convert to fraction form
    85,531.08/128,296.59 = 38,133.93/x
  3. Step 3: Cross multiply
    85,531.08x = 128,296.59 × 38,133.93
  4. Step 4: Simplify right side
    85,531.08x = 4,892,453,182.30
  5. Step 5: Solve for x
    x = 4,892,453,182.30/85,531.08
  6. Step 6: Final answer
    x = 57,200.88

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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.