Home / 72,729.19-100,354.60-40,896.19

Finding the Fourth Proportional to 72,729.19, 100,354.60 and 40,896.19

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Solution

The fourth proportional to 72,729.19, 100,354.60 and 40,896.19 is: 56,430.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,729.19 : 100,354.60 = 40,896.19 : x
  2. Step 2: Convert to fraction form
    72,729.19/100,354.60 = 40,896.19/x
  3. Step 3: Cross multiply
    72,729.19x = 100,354.60 × 40,896.19
  4. Step 4: Simplify right side
    72,729.19x = 4,104,120,735.50
  5. Step 5: Solve for x
    x = 4,104,120,735.50/72,729.19
  6. Step 6: Final answer
    x = 56,430.17

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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.