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Finding the Fourth Proportional to 71,212.80, 106,678.40 and 62,457.60

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Solution

The fourth proportional to 71,212.80, 106,678.40 and 62,457.60 is: 93,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,212.80 : 106,678.40 = 62,457.60 : x
  2. Step 2: Convert to fraction form
    71,212.80/106,678.40 = 62,457.60/x
  3. Step 3: Cross multiply
    71,212.80x = 106,678.40 × 62,457.60
  4. Step 4: Simplify right side
    71,212.80x = 6,662,876,835.84
  5. Step 5: Solve for x
    x = 6,662,876,835.84/71,212.80
  6. Step 6: Final answer
    x = 93,562.91

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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.