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Finding the Fourth Proportional to 60,364.60, 90,516.48 and 20,911.12

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Solution

The fourth proportional to 60,364.60, 90,516.48 and 20,911.12 is: 31,356.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,364.60 : 90,516.48 = 20,911.12 : x
  2. Step 2: Convert to fraction form
    60,364.60/90,516.48 = 20,911.12/x
  3. Step 3: Cross multiply
    60,364.60x = 90,516.48 × 20,911.12
  4. Step 4: Simplify right side
    60,364.60x = 1,892,800,975.26
  5. Step 5: Solve for x
    x = 1,892,800,975.26/60,364.60
  6. Step 6: Final answer
    x = 31,356.14

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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.