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Finding the Fourth Proportional to 101,176.05, 139,624.09 and 55,854.06

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Solution

The fourth proportional to 101,176.05, 139,624.09 and 55,854.06 is: 77,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,176.05 : 139,624.09 = 55,854.06 : x
  2. Step 2: Convert to fraction form
    101,176.05/139,624.09 = 55,854.06/x
  3. Step 3: Cross multiply
    101,176.05x = 139,624.09 × 55,854.06
  4. Step 4: Simplify right side
    101,176.05x = 7,798,572,815.16
  5. Step 5: Solve for x
    x = 7,798,572,815.16/101,176.05
  6. Step 6: Final answer
    x = 77,079.23

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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.