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Finding the Fourth Proportional to 78,588.79, 108,245.92 and 60,404.74

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Solution

The fourth proportional to 78,588.79, 108,245.92 and 60,404.74 is: 83,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,588.79 : 108,245.92 = 60,404.74 : x
  2. Step 2: Convert to fraction form
    78,588.79/108,245.92 = 60,404.74/x
  3. Step 3: Cross multiply
    78,588.79x = 108,245.92 × 60,404.74
  4. Step 4: Simplify right side
    78,588.79x = 6,538,566,653.66
  5. Step 5: Solve for x
    x = 6,538,566,653.66/78,588.79
  6. Step 6: Final answer
    x = 83,199.74

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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.