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Finding the Fourth Proportional to 68,756.40, 103,118.22 and 38,783.52

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Solution

The fourth proportional to 68,756.40, 103,118.22 and 38,783.52 is: 58,166.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,756.40 : 103,118.22 = 38,783.52 : x
  2. Step 2: Convert to fraction form
    68,756.40/103,118.22 = 38,783.52/x
  3. Step 3: Cross multiply
    68,756.40x = 103,118.22 × 38,783.52
  4. Step 4: Simplify right side
    68,756.40x = 3,999,287,547.73
  5. Step 5: Solve for x
    x = 3,999,287,547.73/68,756.40
  6. Step 6: Final answer
    x = 58,166.04

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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.