Home / 74,630.35-102,910.96-57,637.36

Finding the Fourth Proportional to 74,630.35, 102,910.96 and 57,637.36

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Solution

The fourth proportional to 74,630.35, 102,910.96 and 57,637.36 is: 79,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,630.35 : 102,910.96 = 57,637.36 : x
  2. Step 2: Convert to fraction form
    74,630.35/102,910.96 = 57,637.36/x
  3. Step 3: Cross multiply
    74,630.35x = 102,910.96 × 57,637.36
  4. Step 4: Simplify right side
    74,630.35x = 5,931,516,049.47
  5. Step 5: Solve for x
    x = 5,931,516,049.47/74,630.35
  6. Step 6: Final answer
    x = 79,478.60

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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.