Home / 74,985.81-112,422.69-45,396.51

Finding the Fourth Proportional to 74,985.81, 112,422.69 and 45,396.51

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Solution

The fourth proportional to 74,985.81, 112,422.69 and 45,396.51 is: 68,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,985.81 : 112,422.69 = 45,396.51 : x
  2. Step 2: Convert to fraction form
    74,985.81/112,422.69 = 45,396.51/x
  3. Step 3: Cross multiply
    74,985.81x = 112,422.69 × 45,396.51
  4. Step 4: Simplify right side
    74,985.81x = 5,103,597,770.81
  5. Step 5: Solve for x
    x = 5,103,597,770.81/74,985.81
  6. Step 6: Final answer
    x = 68,060.85

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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.