Home / 78,430.43-117,579.93-54,668.27

Finding the Fourth Proportional to 78,430.43, 117,579.93 and 54,668.27

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Solution

The fourth proportional to 78,430.43, 117,579.93 and 54,668.27 is: 81,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,430.43 : 117,579.93 = 54,668.27 : x
  2. Step 2: Convert to fraction form
    78,430.43/117,579.93 = 54,668.27/x
  3. Step 3: Cross multiply
    78,430.43x = 117,579.93 × 54,668.27
  4. Step 4: Simplify right side
    78,430.43x = 6,427,891,359.82
  5. Step 5: Solve for x
    x = 6,427,891,359.82/78,430.43
  6. Step 6: Final answer
    x = 81,956.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.