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Finding the Fourth Proportional to 60,308.35, 90,398.63 and 20,289.22

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Solution

The fourth proportional to 60,308.35, 90,398.63 and 20,289.22 is: 30,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,308.35 : 90,398.63 = 20,289.22 : x
  2. Step 2: Convert to fraction form
    60,308.35/90,398.63 = 20,289.22/x
  3. Step 3: Cross multiply
    60,308.35x = 90,398.63 × 20,289.22
  4. Step 4: Simplify right side
    60,308.35x = 1,834,117,516.50
  5. Step 5: Solve for x
    x = 1,834,117,516.50/60,308.35
  6. Step 6: Final answer
    x = 30,412.33

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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.