Home / 90,142.74-135,172.80-48,011.81

Finding the Fourth Proportional to 90,142.74, 135,172.80 and 48,011.81

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Solution

The fourth proportional to 90,142.74, 135,172.80 and 48,011.81 is: 71,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,142.74 : 135,172.80 = 48,011.81 : x
  2. Step 2: Convert to fraction form
    90,142.74/135,172.80 = 48,011.81/x
  3. Step 3: Cross multiply
    90,142.74x = 135,172.80 × 48,011.81
  4. Step 4: Simplify right side
    90,142.74x = 6,489,890,114.90
  5. Step 5: Solve for x
    x = 6,489,890,114.90/90,142.74
  6. Step 6: Final answer
    x = 71,995.70

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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.