Home / 78,812.40-118,218.76-26,222.36

Finding the Fourth Proportional to 78,812.40, 118,218.76 and 26,222.36

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Solution

The fourth proportional to 78,812.40, 118,218.76 and 26,222.36 is: 39,333.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,812.40 : 118,218.76 = 26,222.36 : x
  2. Step 2: Convert to fraction form
    78,812.40/118,218.76 = 26,222.36/x
  3. Step 3: Cross multiply
    78,812.40x = 118,218.76 × 26,222.36
  4. Step 4: Simplify right side
    78,812.40x = 3,099,974,883.47
  5. Step 5: Solve for x
    x = 3,099,974,883.47/78,812.40
  6. Step 6: Final answer
    x = 39,333.59

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1.5x scale

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.