Home / 79,078.08-109,127.76-43,268.40

Finding the Fourth Proportional to 79,078.08, 109,127.76 and 43,268.40

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Solution

The fourth proportional to 79,078.08, 109,127.76 and 43,268.40 is: 59,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,078.08 : 109,127.76 = 43,268.40 : x
  2. Step 2: Convert to fraction form
    79,078.08/109,127.76 = 43,268.40/x
  3. Step 3: Cross multiply
    79,078.08x = 109,127.76 × 43,268.40
  4. Step 4: Simplify right side
    79,078.08x = 4,721,783,570.78
  5. Step 5: Solve for x
    x = 4,721,783,570.78/79,078.08
  6. Step 6: Final answer
    x = 59,710.40

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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.