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Finding the Fourth Proportional to 89,498.65, 123,477.40 and 55,494.90

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Solution

The fourth proportional to 89,498.65, 123,477.40 and 55,494.90 is: 76,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,498.65 : 123,477.40 = 55,494.90 : x
  2. Step 2: Convert to fraction form
    89,498.65/123,477.40 = 55,494.90/x
  3. Step 3: Cross multiply
    89,498.65x = 123,477.40 × 55,494.90
  4. Step 4: Simplify right side
    89,498.65x = 6,852,366,364.35
  5. Step 5: Solve for x
    x = 6,852,366,364.35/89,498.65
  6. Step 6: Final answer
    x = 76,563.91

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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.