Home / 68,820.39-94,973.13-40,139.24

Finding the Fourth Proportional to 68,820.39, 94,973.13 and 40,139.24

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Solution

The fourth proportional to 68,820.39, 94,973.13 and 40,139.24 is: 55,392.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,820.39 : 94,973.13 = 40,139.24 : x
  2. Step 2: Convert to fraction form
    68,820.39/94,973.13 = 40,139.24/x
  3. Step 3: Cross multiply
    68,820.39x = 94,973.13 × 40,139.24
  4. Step 4: Simplify right side
    68,820.39x = 3,812,148,783.76
  5. Step 5: Solve for x
    x = 3,812,148,783.76/68,820.39
  6. Step 6: Final answer
    x = 55,392.72

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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.