Home / 72,137.04-99,542.64-40,301.52

Finding the Fourth Proportional to 72,137.04, 99,542.64 and 40,301.52

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Solution

The fourth proportional to 72,137.04, 99,542.64 and 40,301.52 is: 55,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,137.04 : 99,542.64 = 40,301.52 : x
  2. Step 2: Convert to fraction form
    72,137.04/99,542.64 = 40,301.52/x
  3. Step 3: Cross multiply
    72,137.04x = 99,542.64 × 40,301.52
  4. Step 4: Simplify right side
    72,137.04x = 4,011,719,696.81
  5. Step 5: Solve for x
    x = 4,011,719,696.81/72,137.04
  6. Step 6: Final answer
    x = 55,612.48

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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.