Home / 72,686.04-109,029.02-19,378.04

Finding the Fourth Proportional to 72,686.04, 109,029.02 and 19,378.04

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Solution

The fourth proportional to 72,686.04, 109,029.02 and 19,378.04 is: 29,067.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686.04 : 109,029.02 = 19,378.04 : x
  2. Step 2: Convert to fraction form
    72,686.04/109,029.02 = 19,378.04/x
  3. Step 3: Cross multiply
    72,686.04x = 109,029.02 × 19,378.04
  4. Step 4: Simplify right side
    72,686.04x = 2,112,768,710.72
  5. Step 5: Solve for x
    x = 2,112,768,710.72/72,686.04
  6. Step 6: Final answer
    x = 29,067.05

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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.