Home / 74,878.17-111,587.46-72,719.07

Finding the Fourth Proportional to 74,878.17, 111,587.46 and 72,719.07

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Solution

The fourth proportional to 74,878.17, 111,587.46 and 72,719.07 is: 108,369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,878.17 : 111,587.46 = 72,719.07 : x
  2. Step 2: Convert to fraction form
    74,878.17/111,587.46 = 72,719.07/x
  3. Step 3: Cross multiply
    74,878.17x = 111,587.46 × 72,719.07
  4. Step 4: Simplify right side
    74,878.17x = 8,114,536,314.86
  5. Step 5: Solve for x
    x = 8,114,536,314.86/74,878.17
  6. Step 6: Final answer
    x = 108,369.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.