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Finding the Fourth Proportional to 77,352.95, 116,029.53 and 21,193.54

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Solution

The fourth proportional to 77,352.95, 116,029.53 and 21,193.54 is: 31,790.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,352.95 : 116,029.53 = 21,193.54 : x
  2. Step 2: Convert to fraction form
    77,352.95/116,029.53 = 21,193.54/x
  3. Step 3: Cross multiply
    77,352.95x = 116,029.53 × 21,193.54
  4. Step 4: Simplify right side
    77,352.95x = 2,459,076,195.16
  5. Step 5: Solve for x
    x = 2,459,076,195.16/77,352.95
  6. Step 6: Final answer
    x = 31,790.33

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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.