Home / 56,274.12-77,655.24-31,122

Finding the Fourth Proportional to 56,274.12, 77,655.24 and 31,122

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Solution

The fourth proportional to 56,274.12, 77,655.24 and 31,122 is: 42,946.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,274.12 : 77,655.24 = 31,122 : x
  2. Step 2: Convert to fraction form
    56,274.12/77,655.24 = 31,122/x
  3. Step 3: Cross multiply
    56,274.12x = 77,655.24 × 31,122
  4. Step 4: Simplify right side
    56,274.12x = 2,416,786,379.28
  5. Step 5: Solve for x
    x = 2,416,786,379.28/56,274.12
  6. Step 6: Final answer
    x = 42,946.68

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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.