Home / 64,420.72-88,890.35-41,790.74

Finding the Fourth Proportional to 64,420.72, 88,890.35 and 41,790.74

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Solution

The fourth proportional to 64,420.72, 88,890.35 and 41,790.74 is: 57,664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,420.72 : 88,890.35 = 41,790.74 : x
  2. Step 2: Convert to fraction form
    64,420.72/88,890.35 = 41,790.74/x
  3. Step 3: Cross multiply
    64,420.72x = 88,890.35 × 41,790.74
  4. Step 4: Simplify right side
    64,420.72x = 3,714,792,851.95
  5. Step 5: Solve for x
    x = 3,714,792,851.95/64,420.72
  6. Step 6: Final answer
    x = 57,664.57

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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.