Home / 87,404.75-121,075.38-85,633.28

Finding the Fourth Proportional to 87,404.75, 121,075.38 and 85,633.28

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Solution

The fourth proportional to 87,404.75, 121,075.38 and 85,633.28 is: 118,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,404.75 : 121,075.38 = 85,633.28 : x
  2. Step 2: Convert to fraction form
    87,404.75/121,075.38 = 85,633.28/x
  3. Step 3: Cross multiply
    87,404.75x = 121,075.38 × 85,633.28
  4. Step 4: Simplify right side
    87,404.75x = 10,368,081,311.27
  5. Step 5: Solve for x
    x = 10,368,081,311.27/87,404.75
  6. Step 6: Final answer
    x = 118,621.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.