Home / 77,029.60-115,544.40-72,752.80

Finding the Fourth Proportional to 77,029.60, 115,544.40 and 72,752.80

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Solution

The fourth proportional to 77,029.60, 115,544.40 and 72,752.80 is: 109,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,029.60 : 115,544.40 = 72,752.80 : x
  2. Step 2: Convert to fraction form
    77,029.60/115,544.40 = 72,752.80/x
  3. Step 3: Cross multiply
    77,029.60x = 115,544.40 × 72,752.80
  4. Step 4: Simplify right side
    77,029.60x = 8,406,178,624.32
  5. Step 5: Solve for x
    x = 8,406,178,624.32/77,029.60
  6. Step 6: Final answer
    x = 109,129.20

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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.