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Finding the Fourth Proportional to 60,351.40, 90,527.10 and 20,909.80

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Solution

The fourth proportional to 60,351.40, 90,527.10 and 20,909.80 is: 31,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,351.40 : 90,527.10 = 20,909.80 : x
  2. Step 2: Convert to fraction form
    60,351.40/90,527.10 = 20,909.80/x
  3. Step 3: Cross multiply
    60,351.40x = 90,527.10 × 20,909.80
  4. Step 4: Simplify right side
    60,351.40x = 1,892,903,555.58
  5. Step 5: Solve for x
    x = 1,892,903,555.58/60,351.40
  6. Step 6: Final answer
    x = 31,364.70

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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.