Home / 56,878.43-78,496.63-31,389.86

Finding the Fourth Proportional to 56,878.43, 78,496.63 and 31,389.86

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Solution

The fourth proportional to 56,878.43, 78,496.63 and 31,389.86 is: 43,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,878.43 : 78,496.63 = 31,389.86 : x
  2. Step 2: Convert to fraction form
    56,878.43/78,496.63 = 31,389.86/x
  3. Step 3: Cross multiply
    56,878.43x = 78,496.63 × 31,389.86
  4. Step 4: Simplify right side
    56,878.43x = 2,463,998,226.17
  5. Step 5: Solve for x
    x = 2,463,998,226.17/56,878.43
  6. Step 6: Final answer
    x = 43,320.43

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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.