Home / 99,072.26-136,719.69-56,631.70

Finding the Fourth Proportional to 99,072.26, 136,719.69 and 56,631.70

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Solution

The fourth proportional to 99,072.26, 136,719.69 and 56,631.70 is: 78,151.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072.26 : 136,719.69 = 56,631.70 : x
  2. Step 2: Convert to fraction form
    99,072.26/136,719.69 = 56,631.70/x
  3. Step 3: Cross multiply
    99,072.26x = 136,719.69 × 56,631.70
  4. Step 4: Simplify right side
    99,072.26x = 7,742,668,468.17
  5. Step 5: Solve for x
    x = 7,742,668,468.17/99,072.26
  6. Step 6: Final answer
    x = 78,151.73

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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.