Home / 72,538.16-100,104.48-40,709.60

Finding the Fourth Proportional to 72,538.16, 100,104.48 and 40,709.60

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Solution

The fourth proportional to 72,538.16, 100,104.48 and 40,709.60 is: 56,180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,538.16 : 100,104.48 = 40,709.60 : x
  2. Step 2: Convert to fraction form
    72,538.16/100,104.48 = 40,709.60/x
  3. Step 3: Cross multiply
    72,538.16x = 100,104.48 × 40,709.60
  4. Step 4: Simplify right side
    72,538.16x = 4,075,213,339.01
  5. Step 5: Solve for x
    x = 4,075,213,339.01/72,538.16
  6. Step 6: Final answer
    x = 56,180.27

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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.