Home / 55,130.39-76,079.74-29,979.89

Finding the Fourth Proportional to 55,130.39, 76,079.74 and 29,979.89

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Solution

The fourth proportional to 55,130.39, 76,079.74 and 29,979.89 is: 41,372.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,130.39 : 76,079.74 = 29,979.89 : x
  2. Step 2: Convert to fraction form
    55,130.39/76,079.74 = 29,979.89/x
  3. Step 3: Cross multiply
    55,130.39x = 76,079.74 × 29,979.89
  4. Step 4: Simplify right side
    55,130.39x = 2,280,862,236.43
  5. Step 5: Solve for x
    x = 2,280,862,236.43/55,130.39
  6. Step 6: Final answer
    x = 41,372.14

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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.