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Finding the Fourth Proportional to 68,920.67, 103,421.63 and 28,946.66

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Solution

The fourth proportional to 68,920.67, 103,421.63 and 28,946.66 is: 43,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,920.67 : 103,421.63 = 28,946.66 : x
  2. Step 2: Convert to fraction form
    68,920.67/103,421.63 = 28,946.66/x
  3. Step 3: Cross multiply
    68,920.67x = 103,421.63 × 28,946.66
  4. Step 4: Simplify right side
    68,920.67x = 2,993,710,874.08
  5. Step 5: Solve for x
    x = 2,993,710,874.08/68,920.67
  6. Step 6: Final answer
    x = 43,437.06

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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.