Home / 91,440.09-126,187.52-51,154.53

Finding the Fourth Proportional to 91,440.09, 126,187.52 and 51,154.53

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Solution

The fourth proportional to 91,440.09, 126,187.52 and 51,154.53 is: 70,593.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,440.09 : 126,187.52 = 51,154.53 : x
  2. Step 2: Convert to fraction form
    91,440.09/126,187.52 = 51,154.53/x
  3. Step 3: Cross multiply
    91,440.09x = 126,187.52 × 51,154.53
  4. Step 4: Simplify right side
    91,440.09x = 6,455,063,277.47
  5. Step 5: Solve for x
    x = 6,455,063,277.47/91,440.09
  6. Step 6: Final answer
    x = 70,593.36

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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.