Home / 92,904.32-139,373.76-30,579.20

Finding the Fourth Proportional to 92,904.32, 139,373.76 and 30,579.20

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Solution

The fourth proportional to 92,904.32, 139,373.76 and 30,579.20 is: 45,874.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,904.32 : 139,373.76 = 30,579.20 : x
  2. Step 2: Convert to fraction form
    92,904.32/139,373.76 = 30,579.20/x
  3. Step 3: Cross multiply
    92,904.32x = 139,373.76 × 30,579.20
  4. Step 4: Simplify right side
    92,904.32x = 4,261,938,081.79
  5. Step 5: Solve for x
    x = 4,261,938,081.79/92,904.32
  6. Step 6: Final answer
    x = 45,874.49

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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.