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Finding the Fourth Proportional to 64,164.40, 96,253.80 and 19,790.80

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Solution

The fourth proportional to 64,164.40, 96,253.80 and 19,790.80 is: 29,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,164.40 : 96,253.80 = 19,790.80 : x
  2. Step 2: Convert to fraction form
    64,164.40/96,253.80 = 19,790.80/x
  3. Step 3: Cross multiply
    64,164.40x = 96,253.80 × 19,790.80
  4. Step 4: Simplify right side
    64,164.40x = 1,904,939,705.04
  5. Step 5: Solve for x
    x = 1,904,939,705.04/64,164.40
  6. Step 6: Final answer
    x = 29,688.42

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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.