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Finding the Fourth Proportional to 88,217.51, 121,713.34 and 49,970.98

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Solution

The fourth proportional to 88,217.51, 121,713.34 and 49,970.98 is: 68,944.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,217.51 : 121,713.34 = 49,970.98 : x
  2. Step 2: Convert to fraction form
    88,217.51/121,713.34 = 49,970.98/x
  3. Step 3: Cross multiply
    88,217.51x = 121,713.34 × 49,970.98
  4. Step 4: Simplify right side
    88,217.51x = 6,082,134,878.87
  5. Step 5: Solve for x
    x = 6,082,134,878.87/88,217.51
  6. Step 6: Final answer
    x = 68,944.76

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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.