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Finding the Fourth Proportional to 79,246.72, 118,808.64 and 35,440

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Solution

The fourth proportional to 79,246.72, 118,808.64 and 35,440 is: 53,132.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,246.72 : 118,808.64 = 35,440 : x
  2. Step 2: Convert to fraction form
    79,246.72/118,808.64 = 35,440/x
  3. Step 3: Cross multiply
    79,246.72x = 118,808.64 × 35,440
  4. Step 4: Simplify right side
    79,246.72x = 4,210,578,201.60
  5. Step 5: Solve for x
    x = 4,210,578,201.60/79,246.72
  6. Step 6: Final answer
    x = 53,132.52

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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.