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Finding the Fourth Proportional to 61,068.49, 91,598.35 and 18,947.49

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Solution

The fourth proportional to 61,068.49, 91,598.35 and 18,947.49 is: 28,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,068.49 : 91,598.35 = 18,947.49 : x
  2. Step 2: Convert to fraction form
    61,068.49/91,598.35 = 18,947.49/x
  3. Step 3: Cross multiply
    61,068.49x = 91,598.35 × 18,947.49
  4. Step 4: Simplify right side
    61,068.49x = 1,735,558,315.28
  5. Step 5: Solve for x
    x = 1,735,558,315.28/61,068.49
  6. Step 6: Final answer
    x = 28,419.87

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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.