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Finding the Fourth Proportional to 89,674.96, 123,749.64 and 56,159.44

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Solution

The fourth proportional to 89,674.96, 123,749.64 and 56,159.44 is: 77,498.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,674.96 : 123,749.64 = 56,159.44 : x
  2. Step 2: Convert to fraction form
    89,674.96/123,749.64 = 56,159.44/x
  3. Step 3: Cross multiply
    89,674.96x = 123,749.64 × 56,159.44
  4. Step 4: Simplify right side
    89,674.96x = 6,949,710,482.60
  5. Step 5: Solve for x
    x = 6,949,710,482.60/89,674.96
  6. Step 6: Final answer
    x = 77,498.90

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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.