Home / 72,830.13-109,245.19-20,240.07

Finding the Fourth Proportional to 72,830.13, 109,245.19 and 20,240.07

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Solution

The fourth proportional to 72,830.13, 109,245.19 and 20,240.07 is: 30,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,830.13 : 109,245.19 = 20,240.07 : x
  2. Step 2: Convert to fraction form
    72,830.13/109,245.19 = 20,240.07/x
  3. Step 3: Cross multiply
    72,830.13x = 109,245.19 × 20,240.07
  4. Step 4: Simplify right side
    72,830.13x = 2,211,130,292.76
  5. Step 5: Solve for x
    x = 2,211,130,292.76/72,830.13
  6. Step 6: Final answer
    x = 30,360.10

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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.