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Finding the Fourth Proportional to 77,901.48, 107,512.02 and 47,705.04

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Solution

The fourth proportional to 77,901.48, 107,512.02 and 47,705.04 is: 65,837.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,901.48 : 107,512.02 = 47,705.04 : x
  2. Step 2: Convert to fraction form
    77,901.48/107,512.02 = 47,705.04/x
  3. Step 3: Cross multiply
    77,901.48x = 107,512.02 × 47,705.04
  4. Step 4: Simplify right side
    77,901.48x = 5,128,865,214.58
  5. Step 5: Solve for x
    x = 5,128,865,214.58/77,901.48
  6. Step 6: Final answer
    x = 65,837.84

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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.