Home / 90,389.76-124,742.04-50,104.40

Finding the Fourth Proportional to 90,389.76, 124,742.04 and 50,104.40

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Solution

The fourth proportional to 90,389.76, 124,742.04 and 50,104.40 is: 69,146.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.76 : 124,742.04 = 50,104.40 : x
  2. Step 2: Convert to fraction form
    90,389.76/124,742.04 = 50,104.40/x
  3. Step 3: Cross multiply
    90,389.76x = 124,742.04 × 50,104.40
  4. Step 4: Simplify right side
    90,389.76x = 6,250,125,068.98
  5. Step 5: Solve for x
    x = 6,250,125,068.98/90,389.76
  6. Step 6: Final answer
    x = 69,146.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.