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Finding the Fourth Proportional to 60,718.70, 91,078.05 and 54,813.80

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Solution

The fourth proportional to 60,718.70, 91,078.05 and 54,813.80 is: 82,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,718.70 : 91,078.05 = 54,813.80 : x
  2. Step 2: Convert to fraction form
    60,718.70/91,078.05 = 54,813.80/x
  3. Step 3: Cross multiply
    60,718.70x = 91,078.05 × 54,813.80
  4. Step 4: Simplify right side
    60,718.70x = 4,992,334,017.09
  5. Step 5: Solve for x
    x = 4,992,334,017.09/60,718.70
  6. Step 6: Final answer
    x = 82,220.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.