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Finding the Fourth Proportional to 60,989.04, 91,463.04 and 20,454.36

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Solution

The fourth proportional to 60,989.04, 91,463.04 and 20,454.36 is: 30,674.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,989.04 : 91,463.04 = 20,454.36 : x
  2. Step 2: Convert to fraction form
    60,989.04/91,463.04 = 20,454.36/x
  3. Step 3: Cross multiply
    60,989.04x = 91,463.04 × 20,454.36
  4. Step 4: Simplify right side
    60,989.04x = 1,870,817,946.85
  5. Step 5: Solve for x
    x = 1,870,817,946.85/60,989.04
  6. Step 6: Final answer
    x = 30,674.66

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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.