Home / 103,985.88-155,981.24-33,870.64

Finding the Fourth Proportional to 103,985.88, 155,981.24 and 33,870.64

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Solution

The fourth proportional to 103,985.88, 155,981.24 and 33,870.64 is: 50,806.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,985.88 : 155,981.24 = 33,870.64 : x
  2. Step 2: Convert to fraction form
    103,985.88/155,981.24 = 33,870.64/x
  3. Step 3: Cross multiply
    103,985.88x = 155,981.24 × 33,870.64
  4. Step 4: Simplify right side
    103,985.88x = 5,283,184,426.79
  5. Step 5: Solve for x
    x = 5,283,184,426.79/103,985.88
  6. Step 6: Final answer
    x = 50,806.75

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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.