Home / 90,645.16-125,089.50-50,359

Finding the Fourth Proportional to 90,645.16, 125,089.50 and 50,359

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Solution

The fourth proportional to 90,645.16, 125,089.50 and 50,359 is: 69,494.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,645.16 : 125,089.50 = 50,359 : x
  2. Step 2: Convert to fraction form
    90,645.16/125,089.50 = 50,359/x
  3. Step 3: Cross multiply
    90,645.16x = 125,089.50 × 50,359
  4. Step 4: Simplify right side
    90,645.16x = 6,299,382,130.50
  5. Step 5: Solve for x
    x = 6,299,382,130.50/90,645.16
  6. Step 6: Final answer
    x = 69,494.96

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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.