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Finding the Fourth Proportional to 89,324, 123,267.60 and 55,809.44

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Solution

The fourth proportional to 89,324, 123,267.60 and 55,809.44 is: 77,017.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,324 : 123,267.60 = 55,809.44 : x
  2. Step 2: Convert to fraction form
    89,324/123,267.60 = 55,809.44/x
  3. Step 3: Cross multiply
    89,324x = 123,267.60 × 55,809.44
  4. Step 4: Simplify right side
    89,324x = 6,879,495,726.14
  5. Step 5: Solve for x
    x = 6,879,495,726.14/89,324
  6. Step 6: Final answer
    x = 77,017.33

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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.