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Finding the Fourth Proportional to 88,216.64, 121,712.13 and 49,970.10

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Solution

The fourth proportional to 88,216.64, 121,712.13 and 49,970.10 is: 68,943.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,216.64 : 121,712.13 = 49,970.10 : x
  2. Step 2: Convert to fraction form
    88,216.64/121,712.13 = 49,970.10/x
  3. Step 3: Cross multiply
    88,216.64x = 121,712.13 × 49,970.10
  4. Step 4: Simplify right side
    88,216.64x = 6,081,967,763.73
  5. Step 5: Solve for x
    x = 6,081,967,763.73/88,216.64
  6. Step 6: Final answer
    x = 68,943.54

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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.