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Finding the Fourth Proportional to 64,295.45, 96,439.46 and 19,315.83

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Solution

The fourth proportional to 64,295.45, 96,439.46 and 19,315.83 is: 28,972.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,295.45 : 96,439.46 = 19,315.83 : x
  2. Step 2: Convert to fraction form
    64,295.45/96,439.46 = 19,315.83/x
  3. Step 3: Cross multiply
    64,295.45x = 96,439.46 × 19,315.83
  4. Step 4: Simplify right side
    64,295.45x = 1,862,808,585.81
  5. Step 5: Solve for x
    x = 1,862,808,585.81/64,295.45
  6. Step 6: Final answer
    x = 28,972.63

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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.