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Finding the Fourth Proportional to 79,244.10, 118,866.15 and 39,878.10

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Solution

The fourth proportional to 79,244.10, 118,866.15 and 39,878.10 is: 59,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,244.10 : 118,866.15 = 39,878.10 : x
  2. Step 2: Convert to fraction form
    79,244.10/118,866.15 = 39,878.10/x
  3. Step 3: Cross multiply
    79,244.10x = 118,866.15 × 39,878.10
  4. Step 4: Simplify right side
    79,244.10x = 4,740,156,216.32
  5. Step 5: Solve for x
    x = 4,740,156,216.32/79,244.10
  6. Step 6: Final answer
    x = 59,817.15

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1.5x scale

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.