Home / 90,678.73-125,139.69-50,394.19

Finding the Fourth Proportional to 90,678.73, 125,139.69 and 50,394.19

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Solution

The fourth proportional to 90,678.73, 125,139.69 and 50,394.19 is: 69,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,678.73 : 125,139.69 = 50,394.19 : x
  2. Step 2: Convert to fraction form
    90,678.73/125,139.69 = 50,394.19/x
  3. Step 3: Cross multiply
    90,678.73x = 125,139.69 × 50,394.19
  4. Step 4: Simplify right side
    90,678.73x = 6,306,313,314.40
  5. Step 5: Solve for x
    x = 6,306,313,314.40/90,678.73
  6. Step 6: Final answer
    x = 69,545.67

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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.