Home / 77,428.96-106,156.31-76,029.28

Finding the Fourth Proportional to 77,428.96, 106,156.31 and 76,029.28

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Solution

The fourth proportional to 77,428.96, 106,156.31 and 76,029.28 is: 104,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,428.96 : 106,156.31 = 76,029.28 : x
  2. Step 2: Convert to fraction form
    77,428.96/106,156.31 = 76,029.28/x
  3. Step 3: Cross multiply
    77,428.96x = 106,156.31 × 76,029.28
  4. Step 4: Simplify right side
    77,428.96x = 8,070,987,816.76
  5. Step 5: Solve for x
    x = 8,070,987,816.76/77,428.96
  6. Step 6: Final answer
    x = 104,237.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.