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Finding the Fourth Proportional to 84,042.76, 115,979.04 and 45,802.32

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Solution

The fourth proportional to 84,042.76, 115,979.04 and 45,802.32 is: 63,207.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,042.76 : 115,979.04 = 45,802.32 : x
  2. Step 2: Convert to fraction form
    84,042.76/115,979.04 = 45,802.32/x
  3. Step 3: Cross multiply
    84,042.76x = 115,979.04 × 45,802.32
  4. Step 4: Simplify right side
    84,042.76x = 5,312,109,103.37
  5. Step 5: Solve for x
    x = 5,312,109,103.37/84,042.76
  6. Step 6: Final answer
    x = 63,207.22

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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.