Home / 64,828.57-97,242.87-20,458.78

Finding the Fourth Proportional to 64,828.57, 97,242.87 and 20,458.78

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Solution

The fourth proportional to 64,828.57, 97,242.87 and 20,458.78 is: 30,688.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,828.57 : 97,242.87 = 20,458.78 : x
  2. Step 2: Convert to fraction form
    64,828.57/97,242.87 = 20,458.78/x
  3. Step 3: Cross multiply
    64,828.57x = 97,242.87 × 20,458.78
  4. Step 4: Simplify right side
    64,828.57x = 1,989,470,483.90
  5. Step 5: Solve for x
    x = 1,989,470,483.90/64,828.57
  6. Step 6: Final answer
    x = 30,688.17

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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.