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Finding the Fourth Proportional to 77,171.70, 115,762.03 and 29,787.06

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Solution

The fourth proportional to 77,171.70, 115,762.03 and 29,787.06 is: 44,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,171.70 : 115,762.03 = 29,787.06 : x
  2. Step 2: Convert to fraction form
    77,171.70/115,762.03 = 29,787.06/x
  3. Step 3: Cross multiply
    77,171.70x = 115,762.03 × 29,787.06
  4. Step 4: Simplify right side
    77,171.70x = 3,448,210,169.46
  5. Step 5: Solve for x
    x = 3,448,210,169.46/77,171.70
  6. Step 6: Final answer
    x = 44,682.32

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1.5x scale

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.