Home / 102,041.96-140,822.68-56,720.70

Finding the Fourth Proportional to 102,041.96, 140,822.68 and 56,720.70

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Solution

The fourth proportional to 102,041.96, 140,822.68 and 56,720.70 is: 78,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,041.96 : 140,822.68 = 56,720.70 : x
  2. Step 2: Convert to fraction form
    102,041.96/140,822.68 = 56,720.70/x
  3. Step 3: Cross multiply
    102,041.96x = 140,822.68 × 56,720.70
  4. Step 4: Simplify right side
    102,041.96x = 7,987,560,985.48
  5. Step 5: Solve for x
    x = 7,987,560,985.48/102,041.96
  6. Step 6: Final answer
    x = 78,277.22

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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.