Home / 81,424.34-122,152.60-39,333.70

Finding the Fourth Proportional to 81,424.34, 122,152.60 and 39,333.70

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Solution

The fourth proportional to 81,424.34, 122,152.60 and 39,333.70 is: 59,008.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.34 : 122,152.60 = 39,333.70 : x
  2. Step 2: Convert to fraction form
    81,424.34/122,152.60 = 39,333.70/x
  3. Step 3: Cross multiply
    81,424.34x = 122,152.60 × 39,333.70
  4. Step 4: Simplify right side
    81,424.34x = 4,804,713,111.86
  5. Step 5: Solve for x
    x = 4,804,713,111.86/81,424.34
  6. Step 6: Final answer
    x = 59,008.32

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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.