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Finding the Fourth Proportional to 89,638.50, 134,457.76 and 27,309

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Solution

The fourth proportional to 89,638.50, 134,457.76 and 27,309 is: 40,963.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,638.50 : 134,457.76 = 27,309 : x
  2. Step 2: Convert to fraction form
    89,638.50/134,457.76 = 27,309/x
  3. Step 3: Cross multiply
    89,638.50x = 134,457.76 × 27,309
  4. Step 4: Simplify right side
    89,638.50x = 3,671,906,967.84
  5. Step 5: Solve for x
    x = 3,671,906,967.84/89,638.50
  6. Step 6: Final answer
    x = 40,963.50

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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.