Home / 77,014.20-115,434.90-39,559.80

Finding the Fourth Proportional to 77,014.20, 115,434.90 and 39,559.80

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Solution

The fourth proportional to 77,014.20, 115,434.90 and 39,559.80 is: 59,295.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,014.20 : 115,434.90 = 39,559.80 : x
  2. Step 2: Convert to fraction form
    77,014.20/115,434.90 = 39,559.80/x
  3. Step 3: Cross multiply
    77,014.20x = 115,434.90 × 39,559.80
  4. Step 4: Simplify right side
    77,014.20x = 4,566,581,557.02
  5. Step 5: Solve for x
    x = 4,566,581,557.02/77,014.20
  6. Step 6: Final answer
    x = 59,295.32

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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.