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Finding the Fourth Proportional to 84,483.01, 126,612.42 and 70,470.49

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Solution

The fourth proportional to 84,483.01, 126,612.42 and 70,470.49 is: 105,612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,483.01 : 126,612.42 = 70,470.49 : x
  2. Step 2: Convert to fraction form
    84,483.01/126,612.42 = 70,470.49/x
  3. Step 3: Cross multiply
    84,483.01x = 126,612.42 × 70,470.49
  4. Step 4: Simplify right side
    84,483.01x = 8,922,439,277.49
  5. Step 5: Solve for x
    x = 8,922,439,277.49/84,483.01
  6. Step 6: Final answer
    x = 105,612.23

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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.