Home / 56,139.85-77,462.63-31,939.40

Finding the Fourth Proportional to 56,139.85, 77,462.63 and 31,939.40

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Solution

The fourth proportional to 56,139.85, 77,462.63 and 31,939.40 is: 44,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,139.85 : 77,462.63 = 31,939.40 : x
  2. Step 2: Convert to fraction form
    56,139.85/77,462.63 = 31,939.40/x
  3. Step 3: Cross multiply
    56,139.85x = 77,462.63 × 31,939.40
  4. Step 4: Simplify right side
    56,139.85x = 2,474,109,873.23
  5. Step 5: Solve for x
    x = 2,474,109,873.23/56,139.85
  6. Step 6: Final answer
    x = 44,070.48

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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.