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Finding the Fourth Proportional to 68,706.50, 94,814.98 and 38,898.50

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Solution

The fourth proportional to 68,706.50, 94,814.98 and 38,898.50 is: 53,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.50 : 94,814.98 = 38,898.50 : x
  2. Step 2: Convert to fraction form
    68,706.50/94,814.98 = 38,898.50/x
  3. Step 3: Cross multiply
    68,706.50x = 94,814.98 × 38,898.50
  4. Step 4: Simplify right side
    68,706.50x = 3,688,160,499.53
  5. Step 5: Solve for x
    x = 3,688,160,499.53/68,706.50
  6. Step 6: Final answer
    x = 53,679.94

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1.5x scale

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.