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Finding the Fourth Proportional to 68,307.85, 102,461.78 and 67,870.45

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Solution

The fourth proportional to 68,307.85, 102,461.78 and 67,870.45 is: 101,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,307.85 : 102,461.78 = 67,870.45 : x
  2. Step 2: Convert to fraction form
    68,307.85/102,461.78 = 67,870.45/x
  3. Step 3: Cross multiply
    68,307.85x = 102,461.78 × 67,870.45
  4. Step 4: Simplify right side
    68,307.85x = 6,954,126,777.05
  5. Step 5: Solve for x
    x = 6,954,126,777.05/68,307.85
  6. Step 6: Final answer
    x = 101,805.68

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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.