Home / 72,810.12-109,122.94-35,378.76

Finding the Fourth Proportional to 72,810.12, 109,122.94 and 35,378.76

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Solution

The fourth proportional to 72,810.12, 109,122.94 and 35,378.76 is: 53,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,810.12 : 109,122.94 = 35,378.76 : x
  2. Step 2: Convert to fraction form
    72,810.12/109,122.94 = 35,378.76/x
  3. Step 3: Cross multiply
    72,810.12x = 109,122.94 × 35,378.76
  4. Step 4: Simplify right side
    72,810.12x = 3,860,634,304.75
  5. Step 5: Solve for x
    x = 3,860,634,304.75/72,810.12
  6. Step 6: Final answer
    x = 53,023.32

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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.