Home / 78,473.45-117,710.18-19,308.35

Finding the Fourth Proportional to 78,473.45, 117,710.18 and 19,308.35

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Solution

The fourth proportional to 78,473.45, 117,710.18 and 19,308.35 is: 28,962.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,473.45 : 117,710.18 = 19,308.35 : x
  2. Step 2: Convert to fraction form
    78,473.45/117,710.18 = 19,308.35/x
  3. Step 3: Cross multiply
    78,473.45x = 117,710.18 × 19,308.35
  4. Step 4: Simplify right side
    78,473.45x = 2,272,789,257.46
  5. Step 5: Solve for x
    x = 2,272,789,257.46/78,473.45
  6. Step 6: Final answer
    x = 28,962.53

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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.