Home / 90,112.47-124,349.88-49,823.07

Finding the Fourth Proportional to 90,112.47, 124,349.88 and 49,823.07

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Solution

The fourth proportional to 90,112.47, 124,349.88 and 49,823.07 is: 68,752.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,112.47 : 124,349.88 = 49,823.07 : x
  2. Step 2: Convert to fraction form
    90,112.47/124,349.88 = 49,823.07/x
  3. Step 3: Cross multiply
    90,112.47x = 124,349.88 × 49,823.07
  4. Step 4: Simplify right side
    90,112.47x = 6,195,492,775.73
  5. Step 5: Solve for x
    x = 6,195,492,775.73/90,112.47
  6. Step 6: Final answer
    x = 68,752.89

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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.