Home / 72,862.07-109,292.50-20,271.40

Finding the Fourth Proportional to 72,862.07, 109,292.50 and 20,271.40

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Solution

The fourth proportional to 72,862.07, 109,292.50 and 20,271.40 is: 30,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.07 : 109,292.50 = 20,271.40 : x
  2. Step 2: Convert to fraction form
    72,862.07/109,292.50 = 20,271.40/x
  3. Step 3: Cross multiply
    72,862.07x = 109,292.50 × 20,271.40
  4. Step 4: Simplify right side
    72,862.07x = 2,215,511,984.50
  5. Step 5: Solve for x
    x = 2,215,511,984.50/72,862.07
  6. Step 6: Final answer
    x = 30,406.93

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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.