Home / 84,465.45-126,657.18-31,879.08

Finding the Fourth Proportional to 84,465.45, 126,657.18 and 31,879.08

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Solution

The fourth proportional to 84,465.45, 126,657.18 and 31,879.08 is: 47,803.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,465.45 : 126,657.18 = 31,879.08 : x
  2. Step 2: Convert to fraction form
    84,465.45/126,657.18 = 31,879.08/x
  3. Step 3: Cross multiply
    84,465.45x = 126,657.18 × 31,879.08
  4. Step 4: Simplify right side
    84,465.45x = 4,037,714,373.79
  5. Step 5: Solve for x
    x = 4,037,714,373.79/84,465.45
  6. Step 6: Final answer
    x = 47,803.15

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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.