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Finding the Fourth Proportional to 71,026.70, 98,013.51 and 40,790.70

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Solution

The fourth proportional to 71,026.70, 98,013.51 and 40,790.70 is: 56,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,026.70 : 98,013.51 = 40,790.70 : x
  2. Step 2: Convert to fraction form
    71,026.70/98,013.51 = 40,790.70/x
  3. Step 3: Cross multiply
    71,026.70x = 98,013.51 × 40,790.70
  4. Step 4: Simplify right side
    71,026.70x = 3,998,039,682.36
  5. Step 5: Solve for x
    x = 3,998,039,682.36/71,026.70
  6. Step 6: Final answer
    x = 56,289.25

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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.