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Finding the Fourth Proportional to 129,374.72, 194,062.08 and 35,880.47

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Solution

The fourth proportional to 129,374.72, 194,062.08 and 35,880.47 is: 53,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,374.72 : 194,062.08 = 35,880.47 : x
  2. Step 2: Convert to fraction form
    129,374.72/194,062.08 = 35,880.47/x
  3. Step 3: Cross multiply
    129,374.72x = 194,062.08 × 35,880.47
  4. Step 4: Simplify right side
    129,374.72x = 6,963,038,329.72
  5. Step 5: Solve for x
    x = 6,963,038,329.72/129,374.72
  6. Step 6: Final answer
    x = 53,820.70

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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.