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Finding the Fourth Proportional to 87,236, 130,855.28 and 21,572

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Solution

The fourth proportional to 87,236, 130,855.28 and 21,572 is: 32,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,236 : 130,855.28 = 21,572 : x
  2. Step 2: Convert to fraction form
    87,236/130,855.28 = 21,572/x
  3. Step 3: Cross multiply
    87,236x = 130,855.28 × 21,572
  4. Step 4: Simplify right side
    87,236x = 2,822,810,100.16
  5. Step 5: Solve for x
    x = 2,822,810,100.16/87,236
  6. Step 6: Final answer
    x = 32,358.32

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