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Finding the Fourth Proportional to 57,622.84, 86,437.01 and 28,005.40

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Solution

The fourth proportional to 57,622.84, 86,437.01 and 28,005.40 is: 42,009.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,622.84 : 86,437.01 = 28,005.40 : x
  2. Step 2: Convert to fraction form
    57,622.84/86,437.01 = 28,005.40/x
  3. Step 3: Cross multiply
    57,622.84x = 86,437.01 × 28,005.40
  4. Step 4: Simplify right side
    57,622.84x = 2,420,703,039.85
  5. Step 5: Solve for x
    x = 2,420,703,039.85/57,622.84
  6. Step 6: Final answer
    x = 42,009.44

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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.