Home / 72,156.86-99,576.14-40,325.74

Finding the Fourth Proportional to 72,156.86, 99,576.14 and 40,325.74

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Solution

The fourth proportional to 72,156.86, 99,576.14 and 40,325.74 is: 55,649.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156.86 : 99,576.14 = 40,325.74 : x
  2. Step 2: Convert to fraction form
    72,156.86/99,576.14 = 40,325.74/x
  3. Step 3: Cross multiply
    72,156.86x = 99,576.14 × 40,325.74
  4. Step 4: Simplify right side
    72,156.86x = 4,015,481,531.84
  5. Step 5: Solve for x
    x = 4,015,481,531.84/72,156.86
  6. Step 6: Final answer
    x = 55,649.34

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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.