Home / 52,705.40-78,987.89-19,394.64

Finding the Fourth Proportional to 52,705.40, 78,987.89 and 19,394.64

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Solution

The fourth proportional to 52,705.40, 78,987.89 and 19,394.64 is: 29,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,705.40 : 78,987.89 = 19,394.64 : x
  2. Step 2: Convert to fraction form
    52,705.40/78,987.89 = 19,394.64/x
  3. Step 3: Cross multiply
    52,705.40x = 78,987.89 × 19,394.64
  4. Step 4: Simplify right side
    52,705.40x = 1,531,941,739.40
  5. Step 5: Solve for x
    x = 1,531,941,739.40/52,705.40
  6. Step 6: Final answer
    x = 29,066.13

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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.