Home / 84,300.32-126,456.96-31,708.64

Finding the Fourth Proportional to 84,300.32, 126,456.96 and 31,708.64

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Solution

The fourth proportional to 84,300.32, 126,456.96 and 31,708.64 is: 47,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,300.32 : 126,456.96 = 31,708.64 : x
  2. Step 2: Convert to fraction form
    84,300.32/126,456.96 = 31,708.64/x
  3. Step 3: Cross multiply
    84,300.32x = 126,456.96 × 31,708.64
  4. Step 4: Simplify right side
    84,300.32x = 4,009,778,220.13
  5. Step 5: Solve for x
    x = 4,009,778,220.13/84,300.32
  6. Step 6: Final answer
    x = 47,565.40

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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.