Home / 56,512.53-77,985.75-31,018.86

Finding the Fourth Proportional to 56,512.53, 77,985.75 and 31,018.86

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Solution

The fourth proportional to 56,512.53, 77,985.75 and 31,018.86 is: 42,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,512.53 : 77,985.75 = 31,018.86 : x
  2. Step 2: Convert to fraction form
    56,512.53/77,985.75 = 31,018.86/x
  3. Step 3: Cross multiply
    56,512.53x = 77,985.75 × 31,018.86
  4. Step 4: Simplify right side
    56,512.53x = 2,419,029,061.25
  5. Step 5: Solve for x
    x = 2,419,029,061.25/56,512.53
  6. Step 6: Final answer
    x = 42,805.18

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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.