Home / 71,830.86-107,783.19-31,877.22

Finding the Fourth Proportional to 71,830.86, 107,783.19 and 31,877.22

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Solution

The fourth proportional to 71,830.86, 107,783.19 and 31,877.22 is: 47,832.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,830.86 : 107,783.19 = 31,877.22 : x
  2. Step 2: Convert to fraction form
    71,830.86/107,783.19 = 31,877.22/x
  3. Step 3: Cross multiply
    71,830.86x = 107,783.19 × 31,877.22
  4. Step 4: Simplify right side
    71,830.86x = 3,435,828,459.93
  5. Step 5: Solve for x
    x = 3,435,828,459.93/71,830.86
  6. Step 6: Final answer
    x = 47,832.21

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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.