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Finding the Fourth Proportional to 86,997.84, 130,506.12 and 27,812.40

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Solution

The fourth proportional to 86,997.84, 130,506.12 and 27,812.40 is: 41,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,997.84 : 130,506.12 = 27,812.40 : x
  2. Step 2: Convert to fraction form
    86,997.84/130,506.12 = 27,812.40/x
  3. Step 3: Cross multiply
    86,997.84x = 130,506.12 × 27,812.40
  4. Step 4: Simplify right side
    86,997.84x = 3,629,688,411.89
  5. Step 5: Solve for x
    x = 3,629,688,411.89/86,997.84
  6. Step 6: Final answer
    x = 41,721.59

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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.