Home / 88,335-121,902.30-50,631.12

Finding the Fourth Proportional to 88,335, 121,902.30 and 50,631.12

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Solution

The fourth proportional to 88,335, 121,902.30 and 50,631.12 is: 69,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,335 : 121,902.30 = 50,631.12 : x
  2. Step 2: Convert to fraction form
    88,335/121,902.30 = 50,631.12/x
  3. Step 3: Cross multiply
    88,335x = 121,902.30 × 50,631.12
  4. Step 4: Simplify right side
    88,335x = 6,172,049,979.58
  5. Step 5: Solve for x
    x = 6,172,049,979.58/88,335
  6. Step 6: Final answer
    x = 69,870.95

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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.