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Finding the Fourth Proportional to 89,698.89, 123,785.10 and 51,460.11

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Solution

The fourth proportional to 89,698.89, 123,785.10 and 51,460.11 is: 71,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,698.89 : 123,785.10 = 51,460.11 : x
  2. Step 2: Convert to fraction form
    89,698.89/123,785.10 = 51,460.11/x
  3. Step 3: Cross multiply
    89,698.89x = 123,785.10 × 51,460.11
  4. Step 4: Simplify right side
    89,698.89x = 6,369,994,862.36
  5. Step 5: Solve for x
    x = 6,369,994,862.36/89,698.89
  6. Step 6: Final answer
    x = 71,015.31

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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.