Home / 72,236.55-99,686.60-39,973.50

Finding the Fourth Proportional to 72,236.55, 99,686.60 and 39,973.50

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Solution

The fourth proportional to 72,236.55, 99,686.60 and 39,973.50 is: 55,163.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,236.55 : 99,686.60 = 39,973.50 : x
  2. Step 2: Convert to fraction form
    72,236.55/99,686.60 = 39,973.50/x
  3. Step 3: Cross multiply
    72,236.55x = 99,686.60 × 39,973.50
  4. Step 4: Simplify right side
    72,236.55x = 3,984,822,305.10
  5. Step 5: Solve for x
    x = 3,984,822,305.10/72,236.55
  6. Step 6: Final answer
    x = 55,163.52

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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.