Home / 71,113.92-106,439.40-52,386.60

Finding the Fourth Proportional to 71,113.92, 106,439.40 and 52,386.60

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Solution

The fourth proportional to 71,113.92, 106,439.40 and 52,386.60 is: 78,409.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,113.92 : 106,439.40 = 52,386.60 : x
  2. Step 2: Convert to fraction form
    71,113.92/106,439.40 = 52,386.60/x
  3. Step 3: Cross multiply
    71,113.92x = 106,439.40 × 52,386.60
  4. Step 4: Simplify right side
    71,113.92x = 5,575,998,272.04
  5. Step 5: Solve for x
    x = 5,575,998,272.04/71,113.92
  6. Step 6: Final answer
    x = 78,409.38

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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.