Home / 56,879.04-85,278.40-19,421.12

Finding the Fourth Proportional to 56,879.04, 85,278.40 and 19,421.12

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Solution

The fourth proportional to 56,879.04, 85,278.40 and 19,421.12 is: 29,117.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,879.04 : 85,278.40 = 19,421.12 : x
  2. Step 2: Convert to fraction form
    56,879.04/85,278.40 = 19,421.12/x
  3. Step 3: Cross multiply
    56,879.04x = 85,278.40 × 19,421.12
  4. Step 4: Simplify right side
    56,879.04x = 1,656,202,039.81
  5. Step 5: Solve for x
    x = 1,656,202,039.81/56,879.04
  6. Step 6: Final answer
    x = 29,117.97

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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.