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Finding the Fourth Proportional to 91,898.40, 137,847.60 and 39,313.20

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Solution

The fourth proportional to 91,898.40, 137,847.60 and 39,313.20 is: 58,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,898.40 : 137,847.60 = 39,313.20 : x
  2. Step 2: Convert to fraction form
    91,898.40/137,847.60 = 39,313.20/x
  3. Step 3: Cross multiply
    91,898.40x = 137,847.60 × 39,313.20
  4. Step 4: Simplify right side
    91,898.40x = 5,419,230,268.32
  5. Step 5: Solve for x
    x = 5,419,230,268.32/91,898.40
  6. Step 6: Final answer
    x = 58,969.80

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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.