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Finding the Fourth Proportional to 64,280.87, 96,446.65 and 19,911.07

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Solution

The fourth proportional to 64,280.87, 96,446.65 and 19,911.07 is: 29,874.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,280.87 : 96,446.65 = 19,911.07 : x
  2. Step 2: Convert to fraction form
    64,280.87/96,446.65 = 19,911.07/x
  3. Step 3: Cross multiply
    64,280.87x = 96,446.65 × 19,911.07
  4. Step 4: Simplify right side
    64,280.87x = 1,920,355,565.02
  5. Step 5: Solve for x
    x = 1,920,355,565.02/64,280.87
  6. Step 6: Final answer
    x = 29,874.45

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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.