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Finding the Fourth Proportional to 60,370.90, 90,535.83 and 20,918.80

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Solution

The fourth proportional to 60,370.90, 90,535.83 and 20,918.80 is: 31,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,370.90 : 90,535.83 = 20,918.80 : x
  2. Step 2: Convert to fraction form
    60,370.90/90,535.83 = 20,918.80/x
  3. Step 3: Cross multiply
    60,370.90x = 90,535.83 × 20,918.80
  4. Step 4: Simplify right side
    60,370.90x = 1,893,900,920.60
  5. Step 5: Solve for x
    x = 1,893,900,920.60/60,370.90
  6. Step 6: Final answer
    x = 31,371.09

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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.