Home / 70,629.36-105,943.32-21,381.36

Finding the Fourth Proportional to 70,629.36, 105,943.32 and 21,381.36

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Solution

The fourth proportional to 70,629.36, 105,943.32 and 21,381.36 is: 32,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,629.36 : 105,943.32 = 21,381.36 : x
  2. Step 2: Convert to fraction form
    70,629.36/105,943.32 = 21,381.36/x
  3. Step 3: Cross multiply
    70,629.36x = 105,943.32 × 21,381.36
  4. Step 4: Simplify right side
    70,629.36x = 2,265,212,264.52
  5. Step 5: Solve for x
    x = 2,265,212,264.52/70,629.36
  6. Step 6: Final answer
    x = 32,071.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.