Home / 81,985.63-122,700.66-50,415.68

Finding the Fourth Proportional to 81,985.63, 122,700.66 and 50,415.68

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Solution

The fourth proportional to 81,985.63, 122,700.66 and 50,415.68 is: 75,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.63 : 122,700.66 = 50,415.68 : x
  2. Step 2: Convert to fraction form
    81,985.63/122,700.66 = 50,415.68/x
  3. Step 3: Cross multiply
    81,985.63x = 122,700.66 × 50,415.68
  4. Step 4: Simplify right side
    81,985.63x = 6,186,037,210.35
  5. Step 5: Solve for x
    x = 6,186,037,210.35/81,985.63
  6. Step 6: Final answer
    x = 75,452.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.