Home / 72,720.98-100,272.21-51,203.85

Finding the Fourth Proportional to 72,720.98, 100,272.21 and 51,203.85

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Solution

The fourth proportional to 72,720.98, 100,272.21 and 51,203.85 is: 70,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,720.98 : 100,272.21 = 51,203.85 : x
  2. Step 2: Convert to fraction form
    72,720.98/100,272.21 = 51,203.85/x
  3. Step 3: Cross multiply
    72,720.98x = 100,272.21 × 51,203.85
  4. Step 4: Simplify right side
    72,720.98x = 5,134,323,200.01
  5. Step 5: Solve for x
    x = 5,134,323,200.01/72,720.98
  6. Step 6: Final answer
    x = 70,603.05

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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.