Home / 78,955.14-118,455.78-26,401.52

Finding the Fourth Proportional to 78,955.14, 118,455.78 and 26,401.52

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Solution

The fourth proportional to 78,955.14, 118,455.78 and 26,401.52 is: 39,609.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,955.14 : 118,455.78 = 26,401.52 : x
  2. Step 2: Convert to fraction form
    78,955.14/118,455.78 = 26,401.52/x
  3. Step 3: Cross multiply
    78,955.14x = 118,455.78 × 26,401.52
  4. Step 4: Simplify right side
    78,955.14x = 3,127,412,644.79
  5. Step 5: Solve for x
    x = 3,127,412,644.79/78,955.14
  6. Step 6: Final answer
    x = 39,609.99

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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.