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Finding the Fourth Proportional to 79,312.50, 118,968.75 and 30,064.50

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Solution

The fourth proportional to 79,312.50, 118,968.75 and 30,064.50 is: 45,096.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,312.50 : 118,968.75 = 30,064.50 : x
  2. Step 2: Convert to fraction form
    79,312.50/118,968.75 = 30,064.50/x
  3. Step 3: Cross multiply
    79,312.50x = 118,968.75 × 30,064.50
  4. Step 4: Simplify right side
    79,312.50x = 3,576,735,984.38
  5. Step 5: Solve for x
    x = 3,576,735,984.38/79,312.50
  6. Step 6: Final answer
    x = 45,096.75

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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.