Home / 72,079.53-99,460.47-40,249.77

Finding the Fourth Proportional to 72,079.53, 99,460.47 and 40,249.77

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Solution

The fourth proportional to 72,079.53, 99,460.47 and 40,249.77 is: 55,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,079.53 : 99,460.47 = 40,249.77 : x
  2. Step 2: Convert to fraction form
    72,079.53/99,460.47 = 40,249.77/x
  3. Step 3: Cross multiply
    72,079.53x = 99,460.47 × 40,249.77
  4. Step 4: Simplify right side
    72,079.53x = 4,003,261,041.59
  5. Step 5: Solve for x
    x = 4,003,261,041.59/72,079.53
  6. Step 6: Final answer
    x = 55,539.50

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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.