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Finding the Fourth Proportional to 78,992.01, 109,009.22 and 47,160.23

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Solution

The fourth proportional to 78,992.01, 109,009.22 and 47,160.23 is: 65,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,992.01 : 109,009.22 = 47,160.23 : x
  2. Step 2: Convert to fraction form
    78,992.01/109,009.22 = 47,160.23/x
  3. Step 3: Cross multiply
    78,992.01x = 109,009.22 × 47,160.23
  4. Step 4: Simplify right side
    78,992.01x = 5,140,899,106.47
  5. Step 5: Solve for x
    x = 5,140,899,106.47/78,992.01
  6. Step 6: Final answer
    x = 65,081.25

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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.