Home / 85,826.91-128,574.31-48,272.88

Finding the Fourth Proportional to 85,826.91, 128,574.31 and 48,272.88

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Solution

The fourth proportional to 85,826.91, 128,574.31 and 48,272.88 is: 72,315.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,826.91 : 128,574.31 = 48,272.88 : x
  2. Step 2: Convert to fraction form
    85,826.91/128,574.31 = 48,272.88/x
  3. Step 3: Cross multiply
    85,826.91x = 128,574.31 × 48,272.88
  4. Step 4: Simplify right side
    85,826.91x = 6,206,652,237.71
  5. Step 5: Solve for x
    x = 6,206,652,237.71/85,826.91
  6. Step 6: Final answer
    x = 72,315.92

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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.