Home / 78,808.85-118,212.13-36,665.36

Finding the Fourth Proportional to 78,808.85, 118,212.13 and 36,665.36

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Solution

The fourth proportional to 78,808.85, 118,212.13 and 36,665.36 is: 54,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.85 : 118,212.13 = 36,665.36 : x
  2. Step 2: Convert to fraction form
    78,808.85/118,212.13 = 36,665.36/x
  3. Step 3: Cross multiply
    78,808.85x = 118,212.13 × 36,665.36
  4. Step 4: Simplify right side
    78,808.85x = 4,334,289,994.64
  5. Step 5: Solve for x
    x = 4,334,289,994.64/78,808.85
  6. Step 6: Final answer
    x = 54,997.50

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1.5x scale

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.