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Finding the Fourth Proportional to 60,370.70, 90,535.53 and 20,918.60

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Solution

The fourth proportional to 60,370.70, 90,535.53 and 20,918.60 is: 31,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,370.70 : 90,535.53 = 20,918.60 : x
  2. Step 2: Convert to fraction form
    60,370.70/90,535.53 = 20,918.60/x
  3. Step 3: Cross multiply
    60,370.70x = 90,535.53 × 20,918.60
  4. Step 4: Simplify right side
    60,370.70x = 1,893,876,085.18
  5. Step 5: Solve for x
    x = 1,893,876,085.18/60,370.70
  6. Step 6: Final answer
    x = 31,370.78

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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.