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Finding the Fourth Proportional to 61,655.37, 85,079.50 and 37,778.77

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Solution

The fourth proportional to 61,655.37, 85,079.50 and 37,778.77 is: 52,131.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,655.37 : 85,079.50 = 37,778.77 : x
  2. Step 2: Convert to fraction form
    61,655.37/85,079.50 = 37,778.77/x
  3. Step 3: Cross multiply
    61,655.37x = 85,079.50 × 37,778.77
  4. Step 4: Simplify right side
    61,655.37x = 3,214,198,862.22
  5. Step 5: Solve for x
    x = 3,214,198,862.22/61,655.37
  6. Step 6: Final answer
    x = 52,131.69

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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.