Home / 77,068.27-115,610.10-20,909.26

Finding the Fourth Proportional to 77,068.27, 115,610.10 and 20,909.26

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Solution

The fourth proportional to 77,068.27, 115,610.10 and 20,909.26 is: 31,365.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.27 : 115,610.10 = 20,909.26 : x
  2. Step 2: Convert to fraction form
    77,068.27/115,610.10 = 20,909.26/x
  3. Step 3: Cross multiply
    77,068.27x = 115,610.10 × 20,909.26
  4. Step 4: Simplify right side
    77,068.27x = 2,417,321,639.53
  5. Step 5: Solve for x
    x = 2,417,321,639.53/77,068.27
  6. Step 6: Final answer
    x = 31,365.98

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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.