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Finding the Fourth Proportional to 75,291.98, 112,777.19 and 39,640.91

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Solution

The fourth proportional to 75,291.98, 112,777.19 and 39,640.91 is: 59,376.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,291.98 : 112,777.19 = 39,640.91 : x
  2. Step 2: Convert to fraction form
    75,291.98/112,777.19 = 39,640.91/x
  3. Step 3: Cross multiply
    75,291.98x = 112,777.19 × 39,640.91
  4. Step 4: Simplify right side
    75,291.98x = 4,470,590,240.64
  5. Step 5: Solve for x
    x = 4,470,590,240.64/75,291.98
  6. Step 6: Final answer
    x = 59,376.71

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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.