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Finding the Fourth Proportional to 89,765.57, 123,870.84 and 49,477.11

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Solution

The fourth proportional to 89,765.57, 123,870.84 and 49,477.11 is: 68,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,765.57 : 123,870.84 = 49,477.11 : x
  2. Step 2: Convert to fraction form
    89,765.57/123,870.84 = 49,477.11/x
  3. Step 3: Cross multiply
    89,765.57x = 123,870.84 × 49,477.11
  4. Step 4: Simplify right side
    89,765.57x = 6,128,771,176.47
  5. Step 5: Solve for x
    x = 6,128,771,176.47/89,765.57
  6. Step 6: Final answer
    x = 68,275.30

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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.