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Finding the Fourth Proportional to 101,655.36, 140,284.40 and 56,943.36

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Solution

The fourth proportional to 101,655.36, 140,284.40 and 56,943.36 is: 78,581.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,655.36 : 140,284.40 = 56,943.36 : x
  2. Step 2: Convert to fraction form
    101,655.36/140,284.40 = 56,943.36/x
  3. Step 3: Cross multiply
    101,655.36x = 140,284.40 × 56,943.36
  4. Step 4: Simplify right side
    101,655.36x = 7,988,265,091.58
  5. Step 5: Solve for x
    x = 7,988,265,091.58/101,655.36
  6. Step 6: Final answer
    x = 78,581.84

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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.