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Finding the Fourth Proportional to 64,700.53, 89,281.92 and 36,400.75

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Solution

The fourth proportional to 64,700.53, 89,281.92 and 36,400.75 is: 50,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,700.53 : 89,281.92 = 36,400.75 : x
  2. Step 2: Convert to fraction form
    64,700.53/89,281.92 = 36,400.75/x
  3. Step 3: Cross multiply
    64,700.53x = 89,281.92 × 36,400.75
  4. Step 4: Simplify right side
    64,700.53x = 3,249,928,849.44
  5. Step 5: Solve for x
    x = 3,249,928,849.44/64,700.53
  6. Step 6: Final answer
    x = 50,230.33

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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.