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Finding the Fourth Proportional to 91,639.60, 137,416.26 and 35,506

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Solution

The fourth proportional to 91,639.60, 137,416.26 and 35,506 is: 53,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,639.60 : 137,416.26 = 35,506 : x
  2. Step 2: Convert to fraction form
    91,639.60/137,416.26 = 35,506/x
  3. Step 3: Cross multiply
    91,639.60x = 137,416.26 × 35,506
  4. Step 4: Simplify right side
    91,639.60x = 4,879,101,727.56
  5. Step 5: Solve for x
    x = 4,879,101,727.56/91,639.60
  6. Step 6: Final answer
    x = 53,242.29

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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.