Home / 90,741.07-124,900.41-66,499.39

Finding the Fourth Proportional to 90,741.07, 124,900.41 and 66,499.39

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Solution

The fourth proportional to 90,741.07, 124,900.41 and 66,499.39 is: 91,532.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,741.07 : 124,900.41 = 66,499.39 : x
  2. Step 2: Convert to fraction form
    90,741.07/124,900.41 = 66,499.39/x
  3. Step 3: Cross multiply
    90,741.07x = 124,900.41 × 66,499.39
  4. Step 4: Simplify right side
    90,741.07x = 8,305,801,075.75
  5. Step 5: Solve for x
    x = 8,305,801,075.75/90,741.07
  6. Step 6: Final answer
    x = 91,532.99

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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.