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Finding the Fourth Proportional to 56,808.20, 85,115.10 and 36,007.40

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Solution

The fourth proportional to 56,808.20, 85,115.10 and 36,007.40 is: 53,949.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,808.20 : 85,115.10 = 36,007.40 : x
  2. Step 2: Convert to fraction form
    56,808.20/85,115.10 = 36,007.40/x
  3. Step 3: Cross multiply
    56,808.20x = 85,115.10 × 36,007.40
  4. Step 4: Simplify right side
    56,808.20x = 3,064,773,451.74
  5. Step 5: Solve for x
    x = 3,064,773,451.74/56,808.20
  6. Step 6: Final answer
    x = 53,949.49

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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.