Home / 76,368.20-114,416.80-31,897.12

Finding the Fourth Proportional to 76,368.20, 114,416.80 and 31,897.12

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Solution

The fourth proportional to 76,368.20, 114,416.80 and 31,897.12 is: 47,789.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,368.20 : 114,416.80 = 31,897.12 : x
  2. Step 2: Convert to fraction form
    76,368.20/114,416.80 = 31,897.12/x
  3. Step 3: Cross multiply
    76,368.20x = 114,416.80 × 31,897.12
  4. Step 4: Simplify right side
    76,368.20x = 3,649,566,399.62
  5. Step 5: Solve for x
    x = 3,649,566,399.62/76,368.20
  6. Step 6: Final answer
    x = 47,789.08

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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.