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Finding the Fourth Proportional to 85,549.72, 128,238.47 and 35,657.44

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Solution

The fourth proportional to 85,549.72, 128,238.47 and 35,657.44 is: 53,450.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549.72 : 128,238.47 = 35,657.44 : x
  2. Step 2: Convert to fraction form
    85,549.72/128,238.47 = 35,657.44/x
  3. Step 3: Cross multiply
    85,549.72x = 128,238.47 × 35,657.44
  4. Step 4: Simplify right side
    85,549.72x = 4,572,654,730.24
  5. Step 5: Solve for x
    x = 4,572,654,730.24/85,549.72
  6. Step 6: Final answer
    x = 53,450.26

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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.