Home / 84,288.83-126,438.11-31,698.77

Finding the Fourth Proportional to 84,288.83, 126,438.11 and 31,698.77

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Solution

The fourth proportional to 84,288.83, 126,438.11 and 31,698.77 is: 47,549.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,288.83 : 126,438.11 = 31,698.77 : x
  2. Step 2: Convert to fraction form
    84,288.83/126,438.11 = 31,698.77/x
  3. Step 3: Cross multiply
    84,288.83x = 126,438.11 × 31,698.77
  4. Step 4: Simplify right side
    84,288.83x = 4,007,932,430.22
  5. Step 5: Solve for x
    x = 4,007,932,430.22/84,288.83
  6. Step 6: Final answer
    x = 47,549.98

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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.