Home / 90,486.27-135,686.19-53,057.74

Finding the Fourth Proportional to 90,486.27, 135,686.19 and 53,057.74

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Solution

The fourth proportional to 90,486.27, 135,686.19 and 53,057.74 is: 79,561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,486.27 : 135,686.19 = 53,057.74 : x
  2. Step 2: Convert to fraction form
    90,486.27/135,686.19 = 53,057.74/x
  3. Step 3: Cross multiply
    90,486.27x = 135,686.19 × 53,057.74
  4. Step 4: Simplify right side
    90,486.27x = 7,199,202,590.61
  5. Step 5: Solve for x
    x = 7,199,202,590.61/90,486.27
  6. Step 6: Final answer
    x = 79,561.27

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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.