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Finding the Fourth Proportional to 64,699.53, 89,280.54 and 36,399.75

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Solution

The fourth proportional to 64,699.53, 89,280.54 and 36,399.75 is: 50,228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,699.53 : 89,280.54 = 36,399.75 : x
  2. Step 2: Convert to fraction form
    64,699.53/89,280.54 = 36,399.75/x
  3. Step 3: Cross multiply
    64,699.53x = 89,280.54 × 36,399.75
  4. Step 4: Simplify right side
    64,699.53x = 3,249,789,335.87
  5. Step 5: Solve for x
    x = 3,249,789,335.87/64,699.53
  6. Step 6: Final answer
    x = 50,228.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.