Home / 101,870.10-140,580-56,546.52

Finding the Fourth Proportional to 101,870.10, 140,580 and 56,546.52

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Solution

The fourth proportional to 101,870.10, 140,580 and 56,546.52 is: 78,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,870.10 : 140,580 = 56,546.52 : x
  2. Step 2: Convert to fraction form
    101,870.10/140,580 = 56,546.52/x
  3. Step 3: Cross multiply
    101,870.10x = 140,580 × 56,546.52
  4. Step 4: Simplify right side
    101,870.10x = 7,949,309,781.60
  5. Step 5: Solve for x
    x = 7,949,309,781.60/101,870.10
  6. Step 6: Final answer
    x = 78,033.79

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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.