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Finding the Fourth Proportional to 84,392.76, 116,384.94 and 72,452.28

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Solution

The fourth proportional to 84,392.76, 116,384.94 and 72,452.28 is: 99,917.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,392.76 : 116,384.94 = 72,452.28 : x
  2. Step 2: Convert to fraction form
    84,392.76/116,384.94 = 72,452.28/x
  3. Step 3: Cross multiply
    84,392.76x = 116,384.94 × 72,452.28
  4. Step 4: Simplify right side
    84,392.76x = 8,432,354,260.66
  5. Step 5: Solve for x
    x = 8,432,354,260.66/84,392.76
  6. Step 6: Final answer
    x = 99,917.98

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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.