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Finding the Fourth Proportional to 64,281.87, 96,448.15 and 19,912.07

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Solution

The fourth proportional to 64,281.87, 96,448.15 and 19,912.07 is: 29,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,281.87 : 96,448.15 = 19,912.07 : x
  2. Step 2: Convert to fraction form
    64,281.87/96,448.15 = 19,912.07/x
  3. Step 3: Cross multiply
    64,281.87x = 96,448.15 × 19,912.07
  4. Step 4: Simplify right side
    64,281.87x = 1,920,482,314.17
  5. Step 5: Solve for x
    x = 1,920,482,314.17/64,281.87
  6. Step 6: Final answer
    x = 29,875.96

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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.