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Finding the Fourth Proportional to 89,670.70, 123,740.76 and 49,376.60

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Solution

The fourth proportional to 89,670.70, 123,740.76 and 49,376.60 is: 68,137.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,670.70 : 123,740.76 = 49,376.60 : x
  2. Step 2: Convert to fraction form
    89,670.70/123,740.76 = 49,376.60/x
  3. Step 3: Cross multiply
    89,670.70x = 123,740.76 × 49,376.60
  4. Step 4: Simplify right side
    89,670.70x = 6,109,897,391.51
  5. Step 5: Solve for x
    x = 6,109,897,391.51/89,670.70
  6. Step 6: Final answer
    x = 68,137.06

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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.