Home / 90,119.90-124,364.16-49,832.78

Finding the Fourth Proportional to 90,119.90, 124,364.16 and 49,832.78

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Solution

The fourth proportional to 90,119.90, 124,364.16 and 49,832.78 is: 68,768.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,119.90 : 124,364.16 = 49,832.78 : x
  2. Step 2: Convert to fraction form
    90,119.90/124,364.16 = 49,832.78/x
  3. Step 3: Cross multiply
    90,119.90x = 124,364.16 × 49,832.78
  4. Step 4: Simplify right side
    90,119.90x = 6,197,411,825.16
  5. Step 5: Solve for x
    x = 6,197,411,825.16/90,119.90
  6. Step 6: Final answer
    x = 68,768.52

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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.