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Finding the Fourth Proportional to 77,653.88, 106,897.91 and 57,472.73

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Solution

The fourth proportional to 77,653.88, 106,897.91 and 57,472.73 is: 79,116.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,653.88 : 106,897.91 = 57,472.73 : x
  2. Step 2: Convert to fraction form
    77,653.88/106,897.91 = 57,472.73/x
  3. Step 3: Cross multiply
    77,653.88x = 106,897.91 × 57,472.73
  4. Step 4: Simplify right side
    77,653.88x = 6,143,714,698.88
  5. Step 5: Solve for x
    x = 6,143,714,698.88/77,653.88
  6. Step 6: Final answer
    x = 79,116.65

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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.