Home / 81,455.02-112,406.84-45,645.73

Finding the Fourth Proportional to 81,455.02, 112,406.84 and 45,645.73

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Solution

The fourth proportional to 81,455.02, 112,406.84 and 45,645.73 is: 62,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,455.02 : 112,406.84 = 45,645.73 : x
  2. Step 2: Convert to fraction form
    81,455.02/112,406.84 = 45,645.73/x
  3. Step 3: Cross multiply
    81,455.02x = 112,406.84 × 45,645.73
  4. Step 4: Simplify right side
    81,455.02x = 5,130,891,930.72
  5. Step 5: Solve for x
    x = 5,130,891,930.72/81,455.02
  6. Step 6: Final answer
    x = 62,990.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.