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Finding the Fourth Proportional to 79,707.60, 109,994.24 and 45,721.76

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Solution

The fourth proportional to 79,707.60, 109,994.24 and 45,721.76 is: 63,094.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,707.60 : 109,994.24 = 45,721.76 : x
  2. Step 2: Convert to fraction form
    79,707.60/109,994.24 = 45,721.76/x
  3. Step 3: Cross multiply
    79,707.60x = 109,994.24 × 45,721.76
  4. Step 4: Simplify right side
    79,707.60x = 5,029,130,242.66
  5. Step 5: Solve for x
    x = 5,029,130,242.66/79,707.60
  6. Step 6: Final answer
    x = 63,094.74

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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.