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Finding the Fourth Proportional to 85,478.88, 128,218.44 and 22,298.96

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Solution

The fourth proportional to 85,478.88, 128,218.44 and 22,298.96 is: 33,448.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,478.88 : 128,218.44 = 22,298.96 : x
  2. Step 2: Convert to fraction form
    85,478.88/128,218.44 = 22,298.96/x
  3. Step 3: Cross multiply
    85,478.88x = 128,218.44 × 22,298.96
  4. Step 4: Simplify right side
    85,478.88x = 2,859,137,864.82
  5. Step 5: Solve for x
    x = 2,859,137,864.82/85,478.88
  6. Step 6: Final answer
    x = 33,448.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.