Home / 72,421.58-99,936.24-40,584.32

Finding the Fourth Proportional to 72,421.58, 99,936.24 and 40,584.32

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Solution

The fourth proportional to 72,421.58, 99,936.24 and 40,584.32 is: 56,003.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,421.58 : 99,936.24 = 40,584.32 : x
  2. Step 2: Convert to fraction form
    72,421.58/99,936.24 = 40,584.32/x
  3. Step 3: Cross multiply
    72,421.58x = 99,936.24 × 40,584.32
  4. Step 4: Simplify right side
    72,421.58x = 4,055,844,343.76
  5. Step 5: Solve for x
    x = 4,055,844,343.76/72,421.58
  6. Step 6: Final answer
    x = 56,003.26

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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.