Home / 56,881.86-78,501.92-31,390.62

Finding the Fourth Proportional to 56,881.86, 78,501.92 and 31,390.62

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Solution

The fourth proportional to 56,881.86, 78,501.92 and 31,390.62 is: 43,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,881.86 : 78,501.92 = 31,390.62 : x
  2. Step 2: Convert to fraction form
    56,881.86/78,501.92 = 31,390.62/x
  3. Step 3: Cross multiply
    56,881.86x = 78,501.92 × 31,390.62
  4. Step 4: Simplify right side
    56,881.86x = 2,464,223,939.99
  5. Step 5: Solve for x
    x = 2,464,223,939.99/56,881.86
  6. Step 6: Final answer
    x = 43,321.79

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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.