Home / 78,380.09-108,090.84-60,446.69

Finding the Fourth Proportional to 78,380.09, 108,090.84 and 60,446.69

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Solution

The fourth proportional to 78,380.09, 108,090.84 and 60,446.69 is: 83,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,380.09 : 108,090.84 = 60,446.69 : x
  2. Step 2: Convert to fraction form
    78,380.09/108,090.84 = 60,446.69/x
  3. Step 3: Cross multiply
    78,380.09x = 108,090.84 × 60,446.69
  4. Step 4: Simplify right side
    78,380.09x = 6,533,732,654.63
  5. Step 5: Solve for x
    x = 6,533,732,654.63/78,380.09
  6. Step 6: Final answer
    x = 83,359.60

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1.5x scale

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.