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Finding the Fourth Proportional to 91,089.70, 136,638.64 and 27,905.22

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Solution

The fourth proportional to 91,089.70, 136,638.64 and 27,905.22 is: 41,859.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,089.70 : 136,638.64 = 27,905.22 : x
  2. Step 2: Convert to fraction form
    91,089.70/136,638.64 = 27,905.22/x
  3. Step 3: Cross multiply
    91,089.70x = 136,638.64 × 27,905.22
  4. Step 4: Simplify right side
    91,089.70x = 3,812,931,309.70
  5. Step 5: Solve for x
    x = 3,812,931,309.70/91,089.70
  6. Step 6: Final answer
    x = 41,859.08

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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.