Home / 78,308.20-108,083.85-46,495.45

Finding the Fourth Proportional to 78,308.20, 108,083.85 and 46,495.45

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Solution

The fourth proportional to 78,308.20, 108,083.85 and 46,495.45 is: 64,174.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,308.20 : 108,083.85 = 46,495.45 : x
  2. Step 2: Convert to fraction form
    78,308.20/108,083.85 = 46,495.45/x
  3. Step 3: Cross multiply
    78,308.20x = 108,083.85 × 46,495.45
  4. Step 4: Simplify right side
    78,308.20x = 5,025,406,703.06
  5. Step 5: Solve for x
    x = 5,025,406,703.06/78,308.20
  6. Step 6: Final answer
    x = 64,174.72

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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.