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Finding the Fourth Proportional to 72,381.32, 108,563.32 and 30,840.20

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Solution

The fourth proportional to 72,381.32, 108,563.32 and 30,840.20 is: 46,256.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,381.32 : 108,563.32 = 30,840.20 : x
  2. Step 2: Convert to fraction form
    72,381.32/108,563.32 = 30,840.20/x
  3. Step 3: Cross multiply
    72,381.32x = 108,563.32 × 30,840.20
  4. Step 4: Simplify right side
    72,381.32x = 3,348,114,501.46
  5. Step 5: Solve for x
    x = 3,348,114,501.46/72,381.32
  6. Step 6: Final answer
    x = 46,256.61

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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.