Home / 84,403.10-116,421.30-54,140.49

Finding the Fourth Proportional to 84,403.10, 116,421.30 and 54,140.49

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Solution

The fourth proportional to 84,403.10, 116,421.30 and 54,140.49 is: 74,678.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,403.10 : 116,421.30 = 54,140.49 : x
  2. Step 2: Convert to fraction form
    84,403.10/116,421.30 = 54,140.49/x
  3. Step 3: Cross multiply
    84,403.10x = 116,421.30 × 54,140.49
  4. Step 4: Simplify right side
    84,403.10x = 6,303,106,228.44
  5. Step 5: Solve for x
    x = 6,303,106,228.44/84,403.10
  6. Step 6: Final answer
    x = 74,678.61

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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.