Home / 72,030.86-99,408.21-40,204.53

Finding the Fourth Proportional to 72,030.86, 99,408.21 and 40,204.53

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Solution

The fourth proportional to 72,030.86, 99,408.21 and 40,204.53 is: 55,485.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,030.86 : 99,408.21 = 40,204.53 : x
  2. Step 2: Convert to fraction form
    72,030.86/99,408.21 = 40,204.53/x
  3. Step 3: Cross multiply
    72,030.86x = 99,408.21 × 40,204.53
  4. Step 4: Simplify right side
    72,030.86x = 3,996,660,361.19
  5. Step 5: Solve for x
    x = 3,996,660,361.19/72,030.86
  6. Step 6: Final answer
    x = 55,485.39

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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.