Home / 72,915.07-100,401.37-60,120.31

Finding the Fourth Proportional to 72,915.07, 100,401.37 and 60,120.31

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Solution

The fourth proportional to 72,915.07, 100,401.37 and 60,120.31 is: 82,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,915.07 : 100,401.37 = 60,120.31 : x
  2. Step 2: Convert to fraction form
    72,915.07/100,401.37 = 60,120.31/x
  3. Step 3: Cross multiply
    72,915.07x = 100,401.37 × 60,120.31
  4. Step 4: Simplify right side
    72,915.07x = 6,036,161,488.82
  5. Step 5: Solve for x
    x = 6,036,161,488.82/72,915.07
  6. Step 6: Final answer
    x = 82,783.46

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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.