Home / 72,059.90-99,438.64-40,230.84

Finding the Fourth Proportional to 72,059.90, 99,438.64 and 40,230.84

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Solution

The fourth proportional to 72,059.90, 99,438.64 and 40,230.84 is: 55,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,059.90 : 99,438.64 = 40,230.84 : x
  2. Step 2: Convert to fraction form
    72,059.90/99,438.64 = 40,230.84/x
  3. Step 3: Cross multiply
    72,059.90x = 99,438.64 × 40,230.84
  4. Step 4: Simplify right side
    72,059.90x = 4,000,500,015.66
  5. Step 5: Solve for x
    x = 4,000,500,015.66/72,059.90
  6. Step 6: Final answer
    x = 55,516.31

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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.