Home / 56,122.58-77,447.12-30,971.54

Finding the Fourth Proportional to 56,122.58, 77,447.12 and 30,971.54

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Solution

The fourth proportional to 56,122.58, 77,447.12 and 30,971.54 is: 42,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,122.58 : 77,447.12 = 30,971.54 : x
  2. Step 2: Convert to fraction form
    56,122.58/77,447.12 = 30,971.54/x
  3. Step 3: Cross multiply
    56,122.58x = 77,447.12 × 30,971.54
  4. Step 4: Simplify right side
    56,122.58x = 2,398,656,574.96
  5. Step 5: Solve for x
    x = 2,398,656,574.96/56,122.58
  6. Step 6: Final answer
    x = 42,739.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.