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Finding the Fourth Proportional to 91,088.70, 136,637.15 and 27,904.21

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Solution

The fourth proportional to 91,088.70, 136,637.15 and 27,904.21 is: 41,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,088.70 : 136,637.15 = 27,904.21 : x
  2. Step 2: Convert to fraction form
    91,088.70/136,637.15 = 27,904.21/x
  3. Step 3: Cross multiply
    91,088.70x = 136,637.15 × 27,904.21
  4. Step 4: Simplify right side
    91,088.70x = 3,812,751,727.40
  5. Step 5: Solve for x
    x = 3,812,751,727.40/91,088.70
  6. Step 6: Final answer
    x = 41,857.57

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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.