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Finding the Fourth Proportional to 90,618, 125,051.28 and 50,330.24

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Solution

The fourth proportional to 90,618, 125,051.28 and 50,330.24 is: 69,454.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,618 : 125,051.28 = 50,330.24 : x
  2. Step 2: Convert to fraction form
    90,618/125,051.28 = 50,330.24/x
  3. Step 3: Cross multiply
    90,618x = 125,051.28 × 50,330.24
  4. Step 4: Simplify right side
    90,618x = 6,293,860,934.71
  5. Step 5: Solve for x
    x = 6,293,860,934.71/90,618
  6. Step 6: Final answer
    x = 69,454.86

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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.