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Finding the Fourth Proportional to 89,894.40, 124,054.80 and 49,609.20

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Solution

The fourth proportional to 89,894.40, 124,054.80 and 49,609.20 is: 68,460.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,894.40 : 124,054.80 = 49,609.20 : x
  2. Step 2: Convert to fraction form
    89,894.40/124,054.80 = 49,609.20/x
  3. Step 3: Cross multiply
    89,894.40x = 124,054.80 × 49,609.20
  4. Step 4: Simplify right side
    89,894.40x = 6,154,259,384.16
  5. Step 5: Solve for x
    x = 6,154,259,384.16/89,894.40
  6. Step 6: Final answer
    x = 68,460.99

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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.