Home / 89,103.70-122,864.60-56,787.18

Finding the Fourth Proportional to 89,103.70, 122,864.60 and 56,787.18

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Solution

The fourth proportional to 89,103.70, 122,864.60 and 56,787.18 is: 78,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,103.70 : 122,864.60 = 56,787.18 : x
  2. Step 2: Convert to fraction form
    89,103.70/122,864.60 = 56,787.18/x
  3. Step 3: Cross multiply
    89,103.70x = 122,864.60 × 56,787.18
  4. Step 4: Simplify right side
    89,103.70x = 6,977,133,990.63
  5. Step 5: Solve for x
    x = 6,977,133,990.63/89,103.70
  6. Step 6: Final answer
    x = 78,303.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.