Home / 61,677.38-85,130.73-40,220.61

Finding the Fourth Proportional to 61,677.38, 85,130.73 and 40,220.61

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Solution

The fourth proportional to 61,677.38, 85,130.73 and 40,220.61 is: 55,514.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,677.38 : 85,130.73 = 40,220.61 : x
  2. Step 2: Convert to fraction form
    61,677.38/85,130.73 = 40,220.61/x
  3. Step 3: Cross multiply
    61,677.38x = 85,130.73 × 40,220.61
  4. Step 4: Simplify right side
    61,677.38x = 3,424,009,890.35
  5. Step 5: Solve for x
    x = 3,424,009,890.35/61,677.38
  6. Step 6: Final answer
    x = 55,514.84

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1.5x scale

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.