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Finding the Fourth Proportional to 56,743.80, 85,115.70 and 19,346.10

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Solution

The fourth proportional to 56,743.80, 85,115.70 and 19,346.10 is: 29,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,743.80 : 85,115.70 = 19,346.10 : x
  2. Step 2: Convert to fraction form
    56,743.80/85,115.70 = 19,346.10/x
  3. Step 3: Cross multiply
    56,743.80x = 85,115.70 × 19,346.10
  4. Step 4: Simplify right side
    56,743.80x = 1,646,656,843.77
  5. Step 5: Solve for x
    x = 1,646,656,843.77/56,743.80
  6. Step 6: Final answer
    x = 29,019.15

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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.