Home / 75,102.02-103,639.86-40,645.95

Finding the Fourth Proportional to 75,102.02, 103,639.86 and 40,645.95

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Solution

The fourth proportional to 75,102.02, 103,639.86 and 40,645.95 is: 56,090.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,102.02 : 103,639.86 = 40,645.95 : x
  2. Step 2: Convert to fraction form
    75,102.02/103,639.86 = 40,645.95/x
  3. Step 3: Cross multiply
    75,102.02x = 103,639.86 × 40,645.95
  4. Step 4: Simplify right side
    75,102.02x = 4,212,540,567.57
  5. Step 5: Solve for x
    x = 4,212,540,567.57/75,102.02
  6. Step 6: Final answer
    x = 56,090.91

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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.