Home / 90,315.77-124,634.34-49,479.57

Finding the Fourth Proportional to 90,315.77, 124,634.34 and 49,479.57

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Solution

The fourth proportional to 90,315.77, 124,634.34 and 49,479.57 is: 68,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,315.77 : 124,634.34 = 49,479.57 : x
  2. Step 2: Convert to fraction form
    90,315.77/124,634.34 = 49,479.57/x
  3. Step 3: Cross multiply
    90,315.77x = 124,634.34 × 49,479.57
  4. Step 4: Simplify right side
    90,315.77x = 6,166,853,550.43
  5. Step 5: Solve for x
    x = 6,166,853,550.43/90,315.77
  6. Step 6: Final answer
    x = 68,281.03

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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.