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Finding the Fourth Proportional to 76,953.77, 115,605.80 and 55,672.12

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Solution

The fourth proportional to 76,953.77, 115,605.80 and 55,672.12 is: 83,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,953.77 : 115,605.80 = 55,672.12 : x
  2. Step 2: Convert to fraction form
    76,953.77/115,605.80 = 55,672.12/x
  3. Step 3: Cross multiply
    76,953.77x = 115,605.80 × 55,672.12
  4. Step 4: Simplify right side
    76,953.77x = 6,436,020,045.21
  5. Step 5: Solve for x
    x = 6,436,020,045.21/76,953.77
  6. Step 6: Final answer
    x = 83,634.89

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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.