Home / 84,865.64-117,118.30-47,139.90

Finding the Fourth Proportional to 84,865.64, 117,118.30 and 47,139.90

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Solution

The fourth proportional to 84,865.64, 117,118.30 and 47,139.90 is: 65,055.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,865.64 : 117,118.30 = 47,139.90 : x
  2. Step 2: Convert to fraction form
    84,865.64/117,118.30 = 47,139.90/x
  3. Step 3: Cross multiply
    84,865.64x = 117,118.30 × 47,139.90
  4. Step 4: Simplify right side
    84,865.64x = 5,520,944,950.17
  5. Step 5: Solve for x
    x = 5,520,944,950.17/84,865.64
  6. Step 6: Final answer
    x = 65,055.13

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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.