Home / 56,465.24-77,921.49-30,971.08

Finding the Fourth Proportional to 56,465.24, 77,921.49 and 30,971.08

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Solution

The fourth proportional to 56,465.24, 77,921.49 and 30,971.08 is: 42,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,465.24 : 77,921.49 = 30,971.08 : x
  2. Step 2: Convert to fraction form
    56,465.24/77,921.49 = 30,971.08/x
  3. Step 3: Cross multiply
    56,465.24x = 77,921.49 × 30,971.08
  4. Step 4: Simplify right side
    56,465.24x = 2,413,312,310.90
  5. Step 5: Solve for x
    x = 2,413,312,310.90/56,465.24
  6. Step 6: Final answer
    x = 42,739.79

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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.