Home / 84,289.83-126,439.61-31,699.77

Finding the Fourth Proportional to 84,289.83, 126,439.61 and 31,699.77

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Solution

The fourth proportional to 84,289.83, 126,439.61 and 31,699.77 is: 47,551.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,289.83 : 126,439.61 = 31,699.77 : x
  2. Step 2: Convert to fraction form
    84,289.83/126,439.61 = 31,699.77/x
  3. Step 3: Cross multiply
    84,289.83x = 126,439.61 × 31,699.77
  4. Step 4: Simplify right side
    84,289.83x = 4,008,106,555.89
  5. Step 5: Solve for x
    x = 4,008,106,555.89/84,289.83
  6. Step 6: Final answer
    x = 47,551.48

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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.