Home / 72,147.08-99,563.22-40,316.51

Finding the Fourth Proportional to 72,147.08, 99,563.22 and 40,316.51

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Solution

The fourth proportional to 72,147.08, 99,563.22 and 40,316.51 is: 55,636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.08 : 99,563.22 = 40,316.51 : x
  2. Step 2: Convert to fraction form
    72,147.08/99,563.22 = 40,316.51/x
  3. Step 3: Cross multiply
    72,147.08x = 99,563.22 × 40,316.51
  4. Step 4: Simplify right side
    72,147.08x = 4,014,041,803.67
  5. Step 5: Solve for x
    x = 4,014,041,803.67/72,147.08
  6. Step 6: Final answer
    x = 55,636.92

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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.