Home / 90,515.13-135,728.85-53,087.46

Finding the Fourth Proportional to 90,515.13, 135,728.85 and 53,087.46

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Solution

The fourth proportional to 90,515.13, 135,728.85 and 53,087.46 is: 79,605.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,515.13 : 135,728.85 = 53,087.46 : x
  2. Step 2: Convert to fraction form
    90,515.13/135,728.85 = 53,087.46/x
  3. Step 3: Cross multiply
    90,515.13x = 135,728.85 × 53,087.46
  4. Step 4: Simplify right side
    90,515.13x = 7,205,499,895.22
  5. Step 5: Solve for x
    x = 7,205,499,895.22/90,515.13
  6. Step 6: Final answer
    x = 79,605.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.