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Finding the Fourth Proportional to 68,390.58, 94,380.60 and 42,898.02

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Solution

The fourth proportional to 68,390.58, 94,380.60 and 42,898.02 is: 59,200.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.58 : 94,380.60 = 42,898.02 : x
  2. Step 2: Convert to fraction form
    68,390.58/94,380.60 = 42,898.02/x
  3. Step 3: Cross multiply
    68,390.58x = 94,380.60 × 42,898.02
  4. Step 4: Simplify right side
    68,390.58x = 4,048,740,866.41
  5. Step 5: Solve for x
    x = 4,048,740,866.41/68,390.58
  6. Step 6: Final answer
    x = 59,200.27

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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.