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Finding the Fourth Proportional to 72,274.64, 99,739.02 and 40,449.68

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Solution

The fourth proportional to 72,274.64, 99,739.02 and 40,449.68 is: 55,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,274.64 : 99,739.02 = 40,449.68 : x
  2. Step 2: Convert to fraction form
    72,274.64/99,739.02 = 40,449.68/x
  3. Step 3: Cross multiply
    72,274.64x = 99,739.02 × 40,449.68
  4. Step 4: Simplify right side
    72,274.64x = 4,034,411,442.51
  5. Step 5: Solve for x
    x = 4,034,411,442.51/72,274.64
  6. Step 6: Final answer
    x = 55,820.57

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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.