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Finding the Fourth Proportional to 91,703.91, 126,573.89 and 55,913.64

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Solution

The fourth proportional to 91,703.91, 126,573.89 and 55,913.64 is: 77,174.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,703.91 : 126,573.89 = 55,913.64 : x
  2. Step 2: Convert to fraction form
    91,703.91/126,573.89 = 55,913.64/x
  3. Step 3: Cross multiply
    91,703.91x = 126,573.89 × 55,913.64
  4. Step 4: Simplify right side
    91,703.91x = 7,077,206,639.29
  5. Step 5: Solve for x
    x = 7,077,206,639.29/91,703.91
  6. Step 6: Final answer
    x = 77,174.54

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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.