Home / 65,750.41-90,737.19-39,909.25

Finding the Fourth Proportional to 65,750.41, 90,737.19 and 39,909.25

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Solution

The fourth proportional to 65,750.41, 90,737.19 and 39,909.25 is: 55,075.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,750.41 : 90,737.19 = 39,909.25 : x
  2. Step 2: Convert to fraction form
    65,750.41/90,737.19 = 39,909.25/x
  3. Step 3: Cross multiply
    65,750.41x = 90,737.19 × 39,909.25
  4. Step 4: Simplify right side
    65,750.41x = 3,621,253,200.01
  5. Step 5: Solve for x
    x = 3,621,253,200.01/65,750.41
  6. Step 6: Final answer
    x = 55,075.75

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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.