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Finding the Fourth Proportional to 60,308.60, 90,446.70 and 20,877.80

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Solution

The fourth proportional to 60,308.60, 90,446.70 and 20,877.80 is: 31,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,308.60 : 90,446.70 = 20,877.80 : x
  2. Step 2: Convert to fraction form
    60,308.60/90,446.70 = 20,877.80/x
  3. Step 3: Cross multiply
    60,308.60x = 90,446.70 × 20,877.80
  4. Step 4: Simplify right side
    60,308.60x = 1,888,328,113.26
  5. Step 5: Solve for x
    x = 1,888,328,113.26/60,308.60
  6. Step 6: Final answer
    x = 31,311.09

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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.