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Finding the Fourth Proportional to 64,089.87, 96,145.74 and 19,715.64

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Solution

The fourth proportional to 64,089.87, 96,145.74 and 19,715.64 is: 29,576.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,089.87 : 96,145.74 = 19,715.64 : x
  2. Step 2: Convert to fraction form
    64,089.87/96,145.74 = 19,715.64/x
  3. Step 3: Cross multiply
    64,089.87x = 96,145.74 × 19,715.64
  4. Step 4: Simplify right side
    64,089.87x = 1,895,574,797.37
  5. Step 5: Solve for x
    x = 1,895,574,797.37/64,089.87
  6. Step 6: Final answer
    x = 29,576.82

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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.