Home / 78,913.56-118,370.65-19,749.07

Finding the Fourth Proportional to 78,913.56, 118,370.65 and 19,749.07

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Solution

The fourth proportional to 78,913.56, 118,370.65 and 19,749.07 is: 29,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.56 : 118,370.65 = 19,749.07 : x
  2. Step 2: Convert to fraction form
    78,913.56/118,370.65 = 19,749.07/x
  3. Step 3: Cross multiply
    78,913.56x = 118,370.65 × 19,749.07
  4. Step 4: Simplify right side
    78,913.56x = 2,337,710,252.80
  5. Step 5: Solve for x
    x = 2,337,710,252.80/78,913.56
  6. Step 6: Final answer
    x = 29,623.68

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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.