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Finding the Fourth Proportional to 89,886.84, 134,725.29 and 67,628.76

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Solution

The fourth proportional to 89,886.84, 134,725.29 and 67,628.76 is: 101,364.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,886.84 : 134,725.29 = 67,628.76 : x
  2. Step 2: Convert to fraction form
    89,886.84/134,725.29 = 67,628.76/x
  3. Step 3: Cross multiply
    89,886.84x = 134,725.29 × 67,628.76
  4. Step 4: Simplify right side
    89,886.84x = 9,111,304,303.34
  5. Step 5: Solve for x
    x = 9,111,304,303.34/89,886.84
  6. Step 6: Final answer
    x = 101,364.16

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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.