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Finding the Fourth Proportional to 73,127.80, 109,605.30 and 31,007.80

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Solution

The fourth proportional to 73,127.80, 109,605.30 and 31,007.80 is: 46,475.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,127.80 : 109,605.30 = 31,007.80 : x
  2. Step 2: Convert to fraction form
    73,127.80/109,605.30 = 31,007.80/x
  3. Step 3: Cross multiply
    73,127.80x = 109,605.30 × 31,007.80
  4. Step 4: Simplify right side
    73,127.80x = 3,398,619,221.34
  5. Step 5: Solve for x
    x = 3,398,619,221.34/73,127.80
  6. Step 6: Final answer
    x = 46,475.06

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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.