Home / 56,920.86-85,374-31,945.32

Finding the Fourth Proportional to 56,920.86, 85,374 and 31,945.32

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Solution

The fourth proportional to 56,920.86, 85,374 and 31,945.32 is: 47,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,920.86 : 85,374 = 31,945.32 : x
  2. Step 2: Convert to fraction form
    56,920.86/85,374 = 31,945.32/x
  3. Step 3: Cross multiply
    56,920.86x = 85,374 × 31,945.32
  4. Step 4: Simplify right side
    56,920.86x = 2,727,299,749.68
  5. Step 5: Solve for x
    x = 2,727,299,749.68/56,920.86
  6. Step 6: Final answer
    x = 47,913.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.