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Finding the Fourth Proportional to 55,424.90, 76,486.46 and 31,551.58

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Solution

The fourth proportional to 55,424.90, 76,486.46 and 31,551.58 is: 43,541.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,424.90 : 76,486.46 = 31,551.58 : x
  2. Step 2: Convert to fraction form
    55,424.90/76,486.46 = 31,551.58/x
  3. Step 3: Cross multiply
    55,424.90x = 76,486.46 × 31,551.58
  4. Step 4: Simplify right side
    55,424.90x = 2,413,268,661.61
  5. Step 5: Solve for x
    x = 2,413,268,661.61/55,424.90
  6. Step 6: Final answer
    x = 43,541.24

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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.