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Finding the Fourth Proportional to 97,089.60, 145,627.20 and 40,915.20

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Solution

The fourth proportional to 97,089.60, 145,627.20 and 40,915.20 is: 61,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,089.60 : 145,627.20 = 40,915.20 : x
  2. Step 2: Convert to fraction form
    97,089.60/145,627.20 = 40,915.20/x
  3. Step 3: Cross multiply
    97,089.60x = 145,627.20 × 40,915.20
  4. Step 4: Simplify right side
    97,089.60x = 5,958,366,013.44
  5. Step 5: Solve for x
    x = 5,958,366,013.44/97,089.60
  6. Step 6: Final answer
    x = 61,369.77

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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.