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Finding the Fourth Proportional to 79,201.40, 109,298.08 and 43,390.64

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Solution

The fourth proportional to 79,201.40, 109,298.08 and 43,390.64 is: 59,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,201.40 : 109,298.08 = 43,390.64 : x
  2. Step 2: Convert to fraction form
    79,201.40/109,298.08 = 43,390.64/x
  3. Step 3: Cross multiply
    79,201.40x = 109,298.08 × 43,390.64
  4. Step 4: Simplify right side
    79,201.40x = 4,742,513,641.97
  5. Step 5: Solve for x
    x = 4,742,513,641.97/79,201.40
  6. Step 6: Final answer
    x = 59,879.16

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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.