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Finding the Fourth Proportional to 88,280.79, 121,828.87 and 47,994.70

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Solution

The fourth proportional to 88,280.79, 121,828.87 and 47,994.70 is: 66,233.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,280.79 : 121,828.87 = 47,994.70 : x
  2. Step 2: Convert to fraction form
    88,280.79/121,828.87 = 47,994.70/x
  3. Step 3: Cross multiply
    88,280.79x = 121,828.87 × 47,994.70
  4. Step 4: Simplify right side
    88,280.79x = 5,847,140,066.99
  5. Step 5: Solve for x
    x = 5,847,140,066.99/88,280.79
  6. Step 6: Final answer
    x = 66,233.44

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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.