Home / 56,642.24-78,157.64-31,149.64

Finding the Fourth Proportional to 56,642.24, 78,157.64 and 31,149.64

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Solution

The fourth proportional to 56,642.24, 78,157.64 and 31,149.64 is: 42,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,642.24 : 78,157.64 = 31,149.64 : x
  2. Step 2: Convert to fraction form
    56,642.24/78,157.64 = 31,149.64/x
  3. Step 3: Cross multiply
    56,642.24x = 78,157.64 × 31,149.64
  4. Step 4: Simplify right side
    56,642.24x = 2,434,582,349.25
  5. Step 5: Solve for x
    x = 2,434,582,349.25/56,642.24
  6. Step 6: Final answer
    x = 42,981.75

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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.