Home / 72,156.95-99,579.67-40,325.85

Finding the Fourth Proportional to 72,156.95, 99,579.67 and 40,325.85

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Solution

The fourth proportional to 72,156.95, 99,579.67 and 40,325.85 is: 55,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156.95 : 99,579.67 = 40,325.85 : x
  2. Step 2: Convert to fraction form
    72,156.95/99,579.67 = 40,325.85/x
  3. Step 3: Cross multiply
    72,156.95x = 99,579.67 × 40,325.85
  4. Step 4: Simplify right side
    72,156.95x = 4,015,634,435.30
  5. Step 5: Solve for x
    x = 4,015,634,435.30/72,156.95
  6. Step 6: Final answer
    x = 55,651.39

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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.