Home / 42,990.58-64,409.60-17,975.50

Finding the Fourth Proportional to 42,990.58, 64,409.60 and 17,975.50

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Solution

The fourth proportional to 42,990.58, 64,409.60 and 17,975.50 is: 26,931.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,990.58 : 64,409.60 = 17,975.50 : x
  2. Step 2: Convert to fraction form
    42,990.58/64,409.60 = 17,975.50/x
  3. Step 3: Cross multiply
    42,990.58x = 64,409.60 × 17,975.50
  4. Step 4: Simplify right side
    42,990.58x = 1,157,794,764.80
  5. Step 5: Solve for x
    x = 1,157,794,764.80/42,990.58
  6. Step 6: Final answer
    x = 26,931.36

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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.