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Finding the Fourth Proportional to 42,001.60, 62,980.52 and 19,809.01

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Solution

The fourth proportional to 42,001.60, 62,980.52 and 19,809.01 is: 29,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,001.60 : 62,980.52 = 19,809.01 : x
  2. Step 2: Convert to fraction form
    42,001.60/62,980.52 = 19,809.01/x
  3. Step 3: Cross multiply
    42,001.60x = 62,980.52 × 19,809.01
  4. Step 4: Simplify right side
    42,001.60x = 1,247,581,986.66
  5. Step 5: Solve for x
    x = 1,247,581,986.66/42,001.60
  6. Step 6: Final answer
    x = 29,703.20

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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.