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Finding the Fourth Proportional to 91,705.91, 126,542.47 and 53,455.89

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Solution

The fourth proportional to 91,705.91, 126,542.47 and 53,455.89 is: 73,762.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,705.91 : 126,542.47 = 53,455.89 : x
  2. Step 2: Convert to fraction form
    91,705.91/126,542.47 = 53,455.89/x
  3. Step 3: Cross multiply
    91,705.91x = 126,542.47 × 53,455.89
  4. Step 4: Simplify right side
    91,705.91x = 6,764,440,223.01
  5. Step 5: Solve for x
    x = 6,764,440,223.01/91,705.91
  6. Step 6: Final answer
    x = 73,762.31

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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.