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Finding the Fourth Proportional to 69,164.68, 103,580.76 and 39,492.58

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Solution

The fourth proportional to 69,164.68, 103,580.76 and 39,492.58 is: 59,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,164.68 : 103,580.76 = 39,492.58 : x
  2. Step 2: Convert to fraction form
    69,164.68/103,580.76 = 39,492.58/x
  3. Step 3: Cross multiply
    69,164.68x = 103,580.76 × 39,492.58
  4. Step 4: Simplify right side
    69,164.68x = 4,090,671,450.76
  5. Step 5: Solve for x
    x = 4,090,671,450.76/69,164.68
  6. Step 6: Final answer
    x = 59,143.94

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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.