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Finding the Fourth Proportional to 79,980, 110,372.40 and 46,448.16

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Solution

The fourth proportional to 79,980, 110,372.40 and 46,448.16 is: 64,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,980 : 110,372.40 = 46,448.16 : x
  2. Step 2: Convert to fraction form
    79,980/110,372.40 = 46,448.16/x
  3. Step 3: Cross multiply
    79,980x = 110,372.40 × 46,448.16
  4. Step 4: Simplify right side
    79,980x = 5,126,594,894.78
  5. Step 5: Solve for x
    x = 5,126,594,894.78/79,980
  6. Step 6: Final answer
    x = 64,098.46

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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.