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Finding the Fourth Proportional to 91,365.70, 126,077.70 and 55,550.74

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Solution

The fourth proportional to 91,365.70, 126,077.70 and 55,550.74 is: 76,655.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,365.70 : 126,077.70 = 55,550.74 : x
  2. Step 2: Convert to fraction form
    91,365.70/126,077.70 = 55,550.74/x
  3. Step 3: Cross multiply
    91,365.70x = 126,077.70 × 55,550.74
  4. Step 4: Simplify right side
    91,365.70x = 7,003,709,532.50
  5. Step 5: Solve for x
    x = 7,003,709,532.50/91,365.70
  6. Step 6: Final answer
    x = 76,655.79

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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.