Home / 83,712.08-125,548.64-31,146.32

Finding the Fourth Proportional to 83,712.08, 125,548.64 and 31,146.32

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Solution

The fourth proportional to 83,712.08, 125,548.64 and 31,146.32 is: 46,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,712.08 : 125,548.64 = 31,146.32 : x
  2. Step 2: Convert to fraction form
    83,712.08/125,548.64 = 31,146.32/x
  3. Step 3: Cross multiply
    83,712.08x = 125,548.64 × 31,146.32
  4. Step 4: Simplify right side
    83,712.08x = 3,910,378,117.00
  5. Step 5: Solve for x
    x = 3,910,378,117.00/83,712.08
  6. Step 6: Final answer
    x = 46,712.23

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1.5x scale

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.