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Finding the Fourth Proportional to 88,382.85, 121,970.90 and 48,099.21

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Solution

The fourth proportional to 88,382.85, 121,970.90 and 48,099.21 is: 66,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,382.85 : 121,970.90 = 48,099.21 : x
  2. Step 2: Convert to fraction form
    88,382.85/121,970.90 = 48,099.21/x
  3. Step 3: Cross multiply
    88,382.85x = 121,970.90 × 48,099.21
  4. Step 4: Simplify right side
    88,382.85x = 5,866,703,932.99
  5. Step 5: Solve for x
    x = 5,866,703,932.99/88,382.85
  6. Step 6: Final answer
    x = 66,378.31

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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.