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Finding the Fourth Proportional to 61,269.58, 91,916.68 and 27,980.70

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Solution

The fourth proportional to 61,269.58, 91,916.68 and 27,980.70 is: 41,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,269.58 : 91,916.68 = 27,980.70 : x
  2. Step 2: Convert to fraction form
    61,269.58/91,916.68 = 27,980.70/x
  3. Step 3: Cross multiply
    61,269.58x = 91,916.68 × 27,980.70
  4. Step 4: Simplify right side
    61,269.58x = 2,571,893,048.08
  5. Step 5: Solve for x
    x = 2,571,893,048.08/61,269.58
  6. Step 6: Final answer
    x = 41,976.67

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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.