Home / 91,704.15-126,557.78-51,420.49

Finding the Fourth Proportional to 91,704.15, 126,557.78 and 51,420.49

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Solution

The fourth proportional to 91,704.15, 126,557.78 and 51,420.49 is: 70,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,704.15 : 126,557.78 = 51,420.49 : x
  2. Step 2: Convert to fraction form
    91,704.15/126,557.78 = 51,420.49/x
  3. Step 3: Cross multiply
    91,704.15x = 126,557.78 × 51,420.49
  4. Step 4: Simplify right side
    91,704.15x = 6,507,662,487.42
  5. Step 5: Solve for x
    x = 6,507,662,487.42/91,704.15
  6. Step 6: Final answer
    x = 70,963.66

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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.