Home / 74,090.08-111,035.72-47,781.28

Finding the Fourth Proportional to 74,090.08, 111,035.72 and 47,781.28

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Solution

The fourth proportional to 74,090.08, 111,035.72 and 47,781.28 is: 71,607.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,090.08 : 111,035.72 = 47,781.28 : x
  2. Step 2: Convert to fraction form
    74,090.08/111,035.72 = 47,781.28/x
  3. Step 3: Cross multiply
    74,090.08x = 111,035.72 × 47,781.28
  4. Step 4: Simplify right side
    74,090.08x = 5,305,428,827.32
  5. Step 5: Solve for x
    x = 5,305,428,827.32/74,090.08
  6. Step 6: Final answer
    x = 71,607.82

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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.