Home / 81,815.02-122,683.52-28,500.44

Finding the Fourth Proportional to 81,815.02, 122,683.52 and 28,500.44

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Solution

The fourth proportional to 81,815.02, 122,683.52 and 28,500.44 is: 42,737.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,815.02 : 122,683.52 = 28,500.44 : x
  2. Step 2: Convert to fraction form
    81,815.02/122,683.52 = 28,500.44/x
  3. Step 3: Cross multiply
    81,815.02x = 122,683.52 × 28,500.44
  4. Step 4: Simplify right side
    81,815.02x = 3,496,534,288.36
  5. Step 5: Solve for x
    x = 3,496,534,288.36/81,815.02
  6. Step 6: Final answer
    x = 42,737.07

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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.