Home / 81,285.24-112,211.98-61,149.80

Finding the Fourth Proportional to 81,285.24, 112,211.98 and 61,149.80

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Solution

The fourth proportional to 81,285.24, 112,211.98 and 61,149.80 is: 84,415.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.24 : 112,211.98 = 61,149.80 : x
  2. Step 2: Convert to fraction form
    81,285.24/112,211.98 = 61,149.80/x
  3. Step 3: Cross multiply
    81,285.24x = 112,211.98 × 61,149.80
  4. Step 4: Simplify right side
    81,285.24x = 6,861,740,606.23
  5. Step 5: Solve for x
    x = 6,861,740,606.23/81,285.24
  6. Step 6: Final answer
    x = 84,415.58

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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.