Home / 72,397.08-99,911.97-40,576.20

Finding the Fourth Proportional to 72,397.08, 99,911.97 and 40,576.20

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Solution

The fourth proportional to 72,397.08, 99,911.97 and 40,576.20 is: 55,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,397.08 : 99,911.97 = 40,576.20 : x
  2. Step 2: Convert to fraction form
    72,397.08/99,911.97 = 40,576.20/x
  3. Step 3: Cross multiply
    72,397.08x = 99,911.97 × 40,576.20
  4. Step 4: Simplify right side
    72,397.08x = 4,054,048,077.11
  5. Step 5: Solve for x
    x = 4,054,048,077.11/72,397.08
  6. Step 6: Final answer
    x = 55,997.40

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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.