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Finding the Fourth Proportional to 76,179.71, 105,156.21 and 45,966.30

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Solution

The fourth proportional to 76,179.71, 105,156.21 and 45,966.30 is: 63,450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,179.71 : 105,156.21 = 45,966.30 : x
  2. Step 2: Convert to fraction form
    76,179.71/105,156.21 = 45,966.30/x
  3. Step 3: Cross multiply
    76,179.71x = 105,156.21 × 45,966.30
  4. Step 4: Simplify right side
    76,179.71x = 4,833,641,895.72
  5. Step 5: Solve for x
    x = 4,833,641,895.72/76,179.71
  6. Step 6: Final answer
    x = 63,450.52

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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.