Home / 74,657.10-111,985.65-68,954.70

Finding the Fourth Proportional to 74,657.10, 111,985.65 and 68,954.70

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Solution

The fourth proportional to 74,657.10, 111,985.65 and 68,954.70 is: 103,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,657.10 : 111,985.65 = 68,954.70 : x
  2. Step 2: Convert to fraction form
    74,657.10/111,985.65 = 68,954.70/x
  3. Step 3: Cross multiply
    74,657.10x = 111,985.65 × 68,954.70
  4. Step 4: Simplify right side
    74,657.10x = 7,721,936,900.06
  5. Step 5: Solve for x
    x = 7,721,936,900.06/74,657.10
  6. Step 6: Final answer
    x = 103,432.05

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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.