Home / 72,970.28-100,636.70-50,345.36

Finding the Fourth Proportional to 72,970.28, 100,636.70 and 50,345.36

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Solution

The fourth proportional to 72,970.28, 100,636.70 and 50,345.36 is: 69,433.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,970.28 : 100,636.70 = 50,345.36 : x
  2. Step 2: Convert to fraction form
    72,970.28/100,636.70 = 50,345.36/x
  3. Step 3: Cross multiply
    72,970.28x = 100,636.70 × 50,345.36
  4. Step 4: Simplify right side
    72,970.28x = 5,066,590,890.71
  5. Step 5: Solve for x
    x = 5,066,590,890.71/72,970.28
  6. Step 6: Final answer
    x = 69,433.62

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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.