Home / 72,045.42-99,418.53-40,216.32

Finding the Fourth Proportional to 72,045.42, 99,418.53 and 40,216.32

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Solution

The fourth proportional to 72,045.42, 99,418.53 and 40,216.32 is: 55,496.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,045.42 : 99,418.53 = 40,216.32 : x
  2. Step 2: Convert to fraction form
    72,045.42/99,418.53 = 40,216.32/x
  3. Step 3: Cross multiply
    72,045.42x = 99,418.53 × 40,216.32
  4. Step 4: Simplify right side
    72,045.42x = 3,998,247,416.41
  5. Step 5: Solve for x
    x = 3,998,247,416.41/72,045.42
  6. Step 6: Final answer
    x = 55,496.21

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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.