Home / 77,015.40-106,224.36-48,693.78

Finding the Fourth Proportional to 77,015.40, 106,224.36 and 48,693.78

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Solution

The fourth proportional to 77,015.40, 106,224.36 and 48,693.78 is: 67,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.40 : 106,224.36 = 48,693.78 : x
  2. Step 2: Convert to fraction form
    77,015.40/106,224.36 = 48,693.78/x
  3. Step 3: Cross multiply
    77,015.40x = 106,224.36 × 48,693.78
  4. Step 4: Simplify right side
    77,015.40x = 5,172,465,616.48
  5. Step 5: Solve for x
    x = 5,172,465,616.48/77,015.40
  6. Step 6: Final answer
    x = 67,161.45

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1.5x scale

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.