Home / 81,439.84-122,155.08-48,369.96

Finding the Fourth Proportional to 81,439.84, 122,155.08 and 48,369.96

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Solution

The fourth proportional to 81,439.84, 122,155.08 and 48,369.96 is: 72,552.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,439.84 : 122,155.08 = 48,369.96 : x
  2. Step 2: Convert to fraction form
    81,439.84/122,155.08 = 48,369.96/x
  3. Step 3: Cross multiply
    81,439.84x = 122,155.08 × 48,369.96
  4. Step 4: Simplify right side
    81,439.84x = 5,908,636,333.40
  5. Step 5: Solve for x
    x = 5,908,636,333.40/81,439.84
  6. Step 6: Final answer
    x = 72,552.16

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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.