Home / 72,242.16-99,685.72-40,410.32

Finding the Fourth Proportional to 72,242.16, 99,685.72 and 40,410.32

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Solution

The fourth proportional to 72,242.16, 99,685.72 and 40,410.32 is: 55,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,242.16 : 99,685.72 = 40,410.32 : x
  2. Step 2: Convert to fraction form
    72,242.16/99,685.72 = 40,410.32/x
  3. Step 3: Cross multiply
    72,242.16x = 99,685.72 × 40,410.32
  4. Step 4: Simplify right side
    72,242.16x = 4,028,331,844.63
  5. Step 5: Solve for x
    x = 4,028,331,844.63/72,242.16
  6. Step 6: Final answer
    x = 55,761.51

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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.