Home / 90,275.05-124,578.62-49,990.51

Finding the Fourth Proportional to 90,275.05, 124,578.62 and 49,990.51

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Solution

The fourth proportional to 90,275.05, 124,578.62 and 49,990.51 is: 68,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,275.05 : 124,578.62 = 49,990.51 : x
  2. Step 2: Convert to fraction form
    90,275.05/124,578.62 = 49,990.51/x
  3. Step 3: Cross multiply
    90,275.05x = 124,578.62 × 49,990.51
  4. Step 4: Simplify right side
    90,275.05x = 6,227,748,250.98
  5. Step 5: Solve for x
    x = 6,227,748,250.98/90,275.05
  6. Step 6: Final answer
    x = 68,986.38

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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.