Home / 91,289.12-125,981.55-51,007.32

Finding the Fourth Proportional to 91,289.12, 125,981.55 and 51,007.32

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Solution

The fourth proportional to 91,289.12, 125,981.55 and 51,007.32 is: 70,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,289.12 : 125,981.55 = 51,007.32 : x
  2. Step 2: Convert to fraction form
    91,289.12/125,981.55 = 51,007.32/x
  3. Step 3: Cross multiply
    91,289.12x = 125,981.55 × 51,007.32
  4. Step 4: Simplify right side
    91,289.12x = 6,425,981,234.95
  5. Step 5: Solve for x
    x = 6,425,981,234.95/91,289.12
  6. Step 6: Final answer
    x = 70,391.53

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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.