Home / 67,875.96-101,828.70-21,132.60

Finding the Fourth Proportional to 67,875.96, 101,828.70 and 21,132.60

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Solution

The fourth proportional to 67,875.96, 101,828.70 and 21,132.60 is: 31,703.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,875.96 : 101,828.70 = 21,132.60 : x
  2. Step 2: Convert to fraction form
    67,875.96/101,828.70 = 21,132.60/x
  3. Step 3: Cross multiply
    67,875.96x = 101,828.70 × 21,132.60
  4. Step 4: Simplify right side
    67,875.96x = 2,151,905,185.62
  5. Step 5: Solve for x
    x = 2,151,905,185.62/67,875.96
  6. Step 6: Final answer
    x = 31,703.50

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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.