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Finding the Fourth Proportional to 87,210, 130,808.28 and 49,652.16

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Solution

The fourth proportional to 87,210, 130,808.28 and 49,652.16 is: 74,474.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,210 : 130,808.28 = 49,652.16 : x
  2. Step 2: Convert to fraction form
    87,210/130,808.28 = 49,652.16/x
  3. Step 3: Cross multiply
    87,210x = 130,808.28 × 49,652.16
  4. Step 4: Simplify right side
    87,210x = 6,494,913,647.88
  5. Step 5: Solve for x
    x = 6,494,913,647.88/87,210
  6. Step 6: Final answer
    x = 74,474.41

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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.