Home / 72,147.56-99,563.47-40,316.46

Finding the Fourth Proportional to 72,147.56, 99,563.47 and 40,316.46

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Solution

The fourth proportional to 72,147.56, 99,563.47 and 40,316.46 is: 55,636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.56 : 99,563.47 = 40,316.46 : x
  2. Step 2: Convert to fraction form
    72,147.56/99,563.47 = 40,316.46/x
  3. Step 3: Cross multiply
    72,147.56x = 99,563.47 × 40,316.46
  4. Step 4: Simplify right side
    72,147.56x = 4,014,046,706.11
  5. Step 5: Solve for x
    x = 4,014,046,706.11/72,147.56
  6. Step 6: Final answer
    x = 55,636.63

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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.