Home / 42,900.80-64,359.78-14,821.88

Finding the Fourth Proportional to 42,900.80, 64,359.78 and 14,821.88

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Solution

The fourth proportional to 42,900.80, 64,359.78 and 14,821.88 is: 22,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,900.80 : 64,359.78 = 14,821.88 : x
  2. Step 2: Convert to fraction form
    42,900.80/64,359.78 = 14,821.88/x
  3. Step 3: Cross multiply
    42,900.80x = 64,359.78 × 14,821.88
  4. Step 4: Simplify right side
    42,900.80x = 953,932,935.99
  5. Step 5: Solve for x
    x = 953,932,935.99/42,900.80
  6. Step 6: Final answer
    x = 22,235.78

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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.