Home / 61,940.10-85,512.81-40,780.89

Finding the Fourth Proportional to 61,940.10, 85,512.81 and 40,780.89

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Solution

The fourth proportional to 61,940.10, 85,512.81 and 40,780.89 is: 56,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,940.10 : 85,512.81 = 40,780.89 : x
  2. Step 2: Convert to fraction form
    61,940.10/85,512.81 = 40,780.89/x
  3. Step 3: Cross multiply
    61,940.10x = 85,512.81 × 40,780.89
  4. Step 4: Simplify right side
    61,940.10x = 3,487,288,498.20
  5. Step 5: Solve for x
    x = 3,487,288,498.20/61,940.10
  6. Step 6: Final answer
    x = 56,300.98

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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.