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Finding the Fourth Proportional to 76,238.88, 105,246.16 and 50,787.60

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Solution

The fourth proportional to 76,238.88, 105,246.16 and 50,787.60 is: 70,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,238.88 : 105,246.16 = 50,787.60 : x
  2. Step 2: Convert to fraction form
    76,238.88/105,246.16 = 50,787.60/x
  3. Step 3: Cross multiply
    76,238.88x = 105,246.16 × 50,787.60
  4. Step 4: Simplify right side
    76,238.88x = 5,345,199,875.62
  5. Step 5: Solve for x
    x = 5,345,199,875.62/76,238.88
  6. Step 6: Final answer
    x = 70,111.21

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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.