Home / 71,840.60-99,136.13-39,568.94

Finding the Fourth Proportional to 71,840.60, 99,136.13 and 39,568.94

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Solution

The fourth proportional to 71,840.60, 99,136.13 and 39,568.94 is: 54,602.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,840.60 : 99,136.13 = 39,568.94 : x
  2. Step 2: Convert to fraction form
    71,840.60/99,136.13 = 39,568.94/x
  3. Step 3: Cross multiply
    71,840.60x = 99,136.13 × 39,568.94
  4. Step 4: Simplify right side
    71,840.60x = 3,922,711,579.80
  5. Step 5: Solve for x
    x = 3,922,711,579.80/71,840.60
  6. Step 6: Final answer
    x = 54,602.99

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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.