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Finding the Fourth Proportional to 76,461.59, 105,480.37 and 53,813.15

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Solution

The fourth proportional to 76,461.59, 105,480.37 and 53,813.15 is: 74,236.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,461.59 : 105,480.37 = 53,813.15 : x
  2. Step 2: Convert to fraction form
    76,461.59/105,480.37 = 53,813.15/x
  3. Step 3: Cross multiply
    76,461.59x = 105,480.37 × 53,813.15
  4. Step 4: Simplify right side
    76,461.59x = 5,676,230,310.93
  5. Step 5: Solve for x
    x = 5,676,230,310.93/76,461.59
  6. Step 6: Final answer
    x = 74,236.37

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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.