Home / 78,808.08-118,145.60-36,666.42

Finding the Fourth Proportional to 78,808.08, 118,145.60 and 36,666.42

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Solution

The fourth proportional to 78,808.08, 118,145.60 and 36,666.42 is: 54,968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.08 : 118,145.60 = 36,666.42 : x
  2. Step 2: Convert to fraction form
    78,808.08/118,145.60 = 36,666.42/x
  3. Step 3: Cross multiply
    78,808.08x = 118,145.60 × 36,666.42
  4. Step 4: Simplify right side
    78,808.08x = 4,331,976,190.75
  5. Step 5: Solve for x
    x = 4,331,976,190.75/78,808.08
  6. Step 6: Final answer
    x = 54,968.68

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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.