Home / 91,415.27-126,176.55-55,630.48

Finding the Fourth Proportional to 91,415.27, 126,176.55 and 55,630.48

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Solution

The fourth proportional to 91,415.27, 126,176.55 and 55,630.48 is: 76,784.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,415.27 : 126,176.55 = 55,630.48 : x
  2. Step 2: Convert to fraction form
    91,415.27/126,176.55 = 55,630.48/x
  3. Step 3: Cross multiply
    91,415.27x = 126,176.55 × 55,630.48
  4. Step 4: Simplify right side
    91,415.27x = 7,019,262,041.24
  5. Step 5: Solve for x
    x = 7,019,262,041.24/91,415.27
  6. Step 6: Final answer
    x = 76,784.35

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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.