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Finding the Fourth Proportional to 84,661.61, 126,981.99 and 49,142.27

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Solution

The fourth proportional to 84,661.61, 126,981.99 and 49,142.27 is: 73,707.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,661.61 : 126,981.99 = 49,142.27 : x
  2. Step 2: Convert to fraction form
    84,661.61/126,981.99 = 49,142.27/x
  3. Step 3: Cross multiply
    84,661.61x = 126,981.99 × 49,142.27
  4. Step 4: Simplify right side
    84,661.61x = 6,240,182,602.81
  5. Step 5: Solve for x
    x = 6,240,182,602.81/84,661.61
  6. Step 6: Final answer
    x = 73,707.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.