Home / 78,407.07-117,628.83-25,817.01

Finding the Fourth Proportional to 78,407.07, 117,628.83 and 25,817.01

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Solution

The fourth proportional to 78,407.07, 117,628.83 and 25,817.01 is: 38,731.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,407.07 : 117,628.83 = 25,817.01 : x
  2. Step 2: Convert to fraction form
    78,407.07/117,628.83 = 25,817.01/x
  3. Step 3: Cross multiply
    78,407.07x = 117,628.83 × 25,817.01
  4. Step 4: Simplify right side
    78,407.07x = 3,036,824,680.40
  5. Step 5: Solve for x
    x = 3,036,824,680.40/78,407.07
  6. Step 6: Final answer
    x = 38,731.52

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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.