Home / 42,976-64,492.80-18,357.76

Finding the Fourth Proportional to 42,976, 64,492.80 and 18,357.76

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Solution

The fourth proportional to 42,976, 64,492.80 and 18,357.76 is: 27,548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,976 : 64,492.80 = 18,357.76 : x
  2. Step 2: Convert to fraction form
    42,976/64,492.80 = 18,357.76/x
  3. Step 3: Cross multiply
    42,976x = 64,492.80 × 18,357.76
  4. Step 4: Simplify right side
    42,976x = 1,183,943,344.13
  5. Step 5: Solve for x
    x = 1,183,943,344.13/42,976
  6. Step 6: Final answer
    x = 27,548.94

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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.