Home / 90,030.36-124,235.51-49,743.71

Finding the Fourth Proportional to 90,030.36, 124,235.51 and 49,743.71

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Solution

The fourth proportional to 90,030.36, 124,235.51 and 49,743.71 is: 68,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,030.36 : 124,235.51 = 49,743.71 : x
  2. Step 2: Convert to fraction form
    90,030.36/124,235.51 = 49,743.71/x
  3. Step 3: Cross multiply
    90,030.36x = 124,235.51 × 49,743.71
  4. Step 4: Simplify right side
    90,030.36x = 6,179,934,311.25
  5. Step 5: Solve for x
    x = 6,179,934,311.25/90,030.36
  6. Step 6: Final answer
    x = 68,642.78

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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.