Home / 72,923.72-109,386.45-20,330.01

Finding the Fourth Proportional to 72,923.72, 109,386.45 and 20,330.01

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Solution

The fourth proportional to 72,923.72, 109,386.45 and 20,330.01 is: 30,495.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,923.72 : 109,386.45 = 20,330.01 : x
  2. Step 2: Convert to fraction form
    72,923.72/109,386.45 = 20,330.01/x
  3. Step 3: Cross multiply
    72,923.72x = 109,386.45 × 20,330.01
  4. Step 4: Simplify right side
    72,923.72x = 2,223,827,622.36
  5. Step 5: Solve for x
    x = 2,223,827,622.36/72,923.72
  6. Step 6: Final answer
    x = 30,495.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.