Home / 72,180.40-99,607.13-40,352.26

Finding the Fourth Proportional to 72,180.40, 99,607.13 and 40,352.26

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Solution

The fourth proportional to 72,180.40, 99,607.13 and 40,352.26 is: 55,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,180.40 : 99,607.13 = 40,352.26 : x
  2. Step 2: Convert to fraction form
    72,180.40/99,607.13 = 40,352.26/x
  3. Step 3: Cross multiply
    72,180.40x = 99,607.13 × 40,352.26
  4. Step 4: Simplify right side
    72,180.40x = 4,019,372,605.85
  5. Step 5: Solve for x
    x = 4,019,372,605.85/72,180.40
  6. Step 6: Final answer
    x = 55,685.10

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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.