Home / 77,148.60-115,694.10-53,705.40

Finding the Fourth Proportional to 77,148.60, 115,694.10 and 53,705.40

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Solution

The fourth proportional to 77,148.60, 115,694.10 and 53,705.40 is: 80,538.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,148.60 : 115,694.10 = 53,705.40 : x
  2. Step 2: Convert to fraction form
    77,148.60/115,694.10 = 53,705.40/x
  3. Step 3: Cross multiply
    77,148.60x = 115,694.10 × 53,705.40
  4. Step 4: Simplify right side
    77,148.60x = 6,213,397,918.14
  5. Step 5: Solve for x
    x = 6,213,397,918.14/77,148.60
  6. Step 6: Final answer
    x = 80,538.05

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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.