Home / 74,630.85-102,911.64-57,637.86

Finding the Fourth Proportional to 74,630.85, 102,911.64 and 57,637.86

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Solution

The fourth proportional to 74,630.85, 102,911.64 and 57,637.86 is: 79,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,630.85 : 102,911.64 = 57,637.86 : x
  2. Step 2: Convert to fraction form
    74,630.85/102,911.64 = 57,637.86/x
  3. Step 3: Cross multiply
    74,630.85x = 102,911.64 × 57,637.86
  4. Step 4: Simplify right side
    74,630.85x = 5,931,606,698.69
  5. Step 5: Solve for x
    x = 5,931,606,698.69/74,630.85
  6. Step 6: Final answer
    x = 79,479.29

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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.