Home / 72,147.80-99,563.73-40,316.69

Finding the Fourth Proportional to 72,147.80, 99,563.73 and 40,316.69

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Solution

The fourth proportional to 72,147.80, 99,563.73 and 40,316.69 is: 55,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.80 : 99,563.73 = 40,316.69 : x
  2. Step 2: Convert to fraction form
    72,147.80/99,563.73 = 40,316.69/x
  3. Step 3: Cross multiply
    72,147.80x = 99,563.73 × 40,316.69
  4. Step 4: Simplify right side
    72,147.80x = 4,014,080,037.65
  5. Step 5: Solve for x
    x = 4,014,080,037.65/72,147.80
  6. Step 6: Final answer
    x = 55,636.90

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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.