Home / 76,982.40-106,142.40-59,097.60

Finding the Fourth Proportional to 76,982.40, 106,142.40 and 59,097.60

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Solution

The fourth proportional to 76,982.40, 106,142.40 and 59,097.60 is: 81,483.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,982.40 : 106,142.40 = 59,097.60 : x
  2. Step 2: Convert to fraction form
    76,982.40/106,142.40 = 59,097.60/x
  3. Step 3: Cross multiply
    76,982.40x = 106,142.40 × 59,097.60
  4. Step 4: Simplify right side
    76,982.40x = 6,272,761,098.24
  5. Step 5: Solve for x
    x = 6,272,761,098.24/76,982.40
  6. Step 6: Final answer
    x = 81,483.05

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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.