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Finding the Fourth Proportional to 60,364.81, 90,491.77 and 20,894.32

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Solution

The fourth proportional to 60,364.81, 90,491.77 and 20,894.32 is: 31,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,364.81 : 90,491.77 = 20,894.32 : x
  2. Step 2: Convert to fraction form
    60,364.81/90,491.77 = 20,894.32/x
  3. Step 3: Cross multiply
    60,364.81x = 90,491.77 × 20,894.32
  4. Step 4: Simplify right side
    60,364.81x = 1,890,763,599.52
  5. Step 5: Solve for x
    x = 1,890,763,599.52/60,364.81
  6. Step 6: Final answer
    x = 31,322.28

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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.