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Finding the Fourth Proportional to 85,553.71, 128,319.60 and 35,624.50

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Solution

The fourth proportional to 85,553.71, 128,319.60 and 35,624.50 is: 53,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,553.71 : 128,319.60 = 35,624.50 : x
  2. Step 2: Convert to fraction form
    85,553.71/128,319.60 = 35,624.50/x
  3. Step 3: Cross multiply
    85,553.71x = 128,319.60 × 35,624.50
  4. Step 4: Simplify right side
    85,553.71x = 4,571,321,590.20
  5. Step 5: Solve for x
    x = 4,571,321,590.20/85,553.71
  6. Step 6: Final answer
    x = 53,432.18

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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.