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Finding the Fourth Proportional to 85,937.83, 128,912.96 and 35,967.66

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Solution

The fourth proportional to 85,937.83, 128,912.96 and 35,967.66 is: 53,954.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,937.83 : 128,912.96 = 35,967.66 : x
  2. Step 2: Convert to fraction form
    85,937.83/128,912.96 = 35,967.66/x
  3. Step 3: Cross multiply
    85,937.83x = 128,912.96 × 35,967.66
  4. Step 4: Simplify right side
    85,937.83x = 4,636,697,514.87
  5. Step 5: Solve for x
    x = 4,636,697,514.87/85,937.83
  6. Step 6: Final answer
    x = 53,954.09

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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.