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Finding the Fourth Proportional to 42,809.80, 64,041.90 and 37,030.60

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Solution

The fourth proportional to 42,809.80, 64,041.90 and 37,030.60 is: 55,396.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,809.80 : 64,041.90 = 37,030.60 : x
  2. Step 2: Convert to fraction form
    42,809.80/64,041.90 = 37,030.60/x
  3. Step 3: Cross multiply
    42,809.80x = 64,041.90 × 37,030.60
  4. Step 4: Simplify right side
    42,809.80x = 2,371,509,982.14
  5. Step 5: Solve for x
    x = 2,371,509,982.14/42,809.80
  6. Step 6: Final answer
    x = 55,396.43

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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.