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Finding the Fourth Proportional to 79,656.85, 109,913.86 and 45,658.79

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Solution

The fourth proportional to 79,656.85, 109,913.86 and 45,658.79 is: 63,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,656.85 : 109,913.86 = 45,658.79 : x
  2. Step 2: Convert to fraction form
    79,656.85/109,913.86 = 45,658.79/x
  3. Step 3: Cross multiply
    79,656.85x = 109,913.86 × 45,658.79
  4. Step 4: Simplify right side
    79,656.85x = 5,018,533,771.51
  5. Step 5: Solve for x
    x = 5,018,533,771.51/79,656.85
  6. Step 6: Final answer
    x = 63,001.91

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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.