Home / 91,411.52-126,147.54-51,125.12

Finding the Fourth Proportional to 91,411.52, 126,147.54 and 51,125.12

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Solution

The fourth proportional to 91,411.52, 126,147.54 and 51,125.12 is: 70,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,411.52 : 126,147.54 = 51,125.12 : x
  2. Step 2: Convert to fraction form
    91,411.52/126,147.54 = 51,125.12/x
  3. Step 3: Cross multiply
    91,411.52x = 126,147.54 × 51,125.12
  4. Step 4: Simplify right side
    91,411.52x = 6,449,308,120.20
  5. Step 5: Solve for x
    x = 6,449,308,120.20/91,411.52
  6. Step 6: Final answer
    x = 70,552.47

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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.