Home / 71,838.89-99,136.05-40,010.75

Finding the Fourth Proportional to 71,838.89, 99,136.05 and 40,010.75

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Solution

The fourth proportional to 71,838.89, 99,136.05 and 40,010.75 is: 55,213.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,838.89 : 99,136.05 = 40,010.75 : x
  2. Step 2: Convert to fraction form
    71,838.89/99,136.05 = 40,010.75/x
  3. Step 3: Cross multiply
    71,838.89x = 99,136.05 × 40,010.75
  4. Step 4: Simplify right side
    71,838.89x = 3,966,507,216.86
  5. Step 5: Solve for x
    x = 3,966,507,216.86/71,838.89
  6. Step 6: Final answer
    x = 55,213.93

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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.