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Finding the Fourth Proportional to 72,597.79, 100,182.36 and 40,768.03

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Solution

The fourth proportional to 72,597.79, 100,182.36 and 40,768.03 is: 56,258.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,597.79 : 100,182.36 = 40,768.03 : x
  2. Step 2: Convert to fraction form
    72,597.79/100,182.36 = 40,768.03/x
  3. Step 3: Cross multiply
    72,597.79x = 100,182.36 × 40,768.03
  4. Step 4: Simplify right side
    72,597.79x = 4,084,237,457.95
  5. Step 5: Solve for x
    x = 4,084,237,457.95/72,597.79
  6. Step 6: Final answer
    x = 56,258.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.