Home / 42,709.20-64,057.20-14,622.80

Finding the Fourth Proportional to 42,709.20, 64,057.20 and 14,622.80

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Solution

The fourth proportional to 42,709.20, 64,057.20 and 14,622.80 is: 21,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,709.20 : 64,057.20 = 14,622.80 : x
  2. Step 2: Convert to fraction form
    42,709.20/64,057.20 = 14,622.80/x
  3. Step 3: Cross multiply
    42,709.20x = 64,057.20 × 14,622.80
  4. Step 4: Simplify right side
    42,709.20x = 936,695,624.16
  5. Step 5: Solve for x
    x = 936,695,624.16/42,709.20
  6. Step 6: Final answer
    x = 21,931.94

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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.