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Finding the Fourth Proportional to 61,321.41, 84,687.80 and 42,250.77

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Solution

The fourth proportional to 61,321.41, 84,687.80 and 42,250.77 is: 58,350.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,321.41 : 84,687.80 = 42,250.77 : x
  2. Step 2: Convert to fraction form
    61,321.41/84,687.80 = 42,250.77/x
  3. Step 3: Cross multiply
    61,321.41x = 84,687.80 × 42,250.77
  4. Step 4: Simplify right side
    61,321.41x = 3,578,124,759.61
  5. Step 5: Solve for x
    x = 3,578,124,759.61/61,321.41
  6. Step 6: Final answer
    x = 58,350.33

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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.