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Finding the Fourth Proportional to 87,838.80, 121,216.51 and 47,551.67

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Solution

The fourth proportional to 87,838.80, 121,216.51 and 47,551.67 is: 65,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,838.80 : 121,216.51 = 47,551.67 : x
  2. Step 2: Convert to fraction form
    87,838.80/121,216.51 = 47,551.67/x
  3. Step 3: Cross multiply
    87,838.80x = 121,216.51 × 47,551.67
  4. Step 4: Simplify right side
    87,838.80x = 5,764,047,482.07
  5. Step 5: Solve for x
    x = 5,764,047,482.07/87,838.80
  6. Step 6: Final answer
    x = 65,620.74

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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.