Home / 90,871.31-136,314.27-28,541.81

Finding the Fourth Proportional to 90,871.31, 136,314.27 and 28,541.81

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Solution

The fourth proportional to 90,871.31, 136,314.27 and 28,541.81 is: 42,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.31 : 136,314.27 = 28,541.81 : x
  2. Step 2: Convert to fraction form
    90,871.31/136,314.27 = 28,541.81/x
  3. Step 3: Cross multiply
    90,871.31x = 136,314.27 × 28,541.81
  4. Step 4: Simplify right side
    90,871.31x = 3,890,656,335.41
  5. Step 5: Solve for x
    x = 3,890,656,335.41/90,871.31
  6. Step 6: Final answer
    x = 42,815.01

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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.