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Finding the Fourth Proportional to 85,592.70, 128,319.48 and 35,709.96

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Solution

The fourth proportional to 85,592.70, 128,319.48 and 35,709.96 is: 53,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,592.70 : 128,319.48 = 35,709.96 : x
  2. Step 2: Convert to fraction form
    85,592.70/128,319.48 = 35,709.96/x
  3. Step 3: Cross multiply
    85,592.70x = 128,319.48 × 35,709.96
  4. Step 4: Simplify right side
    85,592.70x = 4,582,283,498.02
  5. Step 5: Solve for x
    x = 4,582,283,498.02/85,592.70
  6. Step 6: Final answer
    x = 53,535.92

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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.