Home / 42,693.06-64,047.80-19,319.50

Finding the Fourth Proportional to 42,693.06, 64,047.80 and 19,319.50

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Solution

The fourth proportional to 42,693.06, 64,047.80 and 19,319.50 is: 28,982.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,693.06 : 64,047.80 = 19,319.50 : x
  2. Step 2: Convert to fraction form
    42,693.06/64,047.80 = 19,319.50/x
  3. Step 3: Cross multiply
    42,693.06x = 64,047.80 × 19,319.50
  4. Step 4: Simplify right side
    42,693.06x = 1,237,371,472.10
  5. Step 5: Solve for x
    x = 1,237,371,472.10/42,693.06
  6. Step 6: Final answer
    x = 28,982.97

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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.