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Finding the Fourth Proportional to 77,356.80, 116,056.80 and 37,915.20

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Solution

The fourth proportional to 77,356.80, 116,056.80 and 37,915.20 is: 56,883.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,356.80 : 116,056.80 = 37,915.20 : x
  2. Step 2: Convert to fraction form
    77,356.80/116,056.80 = 37,915.20/x
  3. Step 3: Cross multiply
    77,356.80x = 116,056.80 × 37,915.20
  4. Step 4: Simplify right side
    77,356.80x = 4,400,316,783.36
  5. Step 5: Solve for x
    x = 4,400,316,783.36/77,356.80
  6. Step 6: Final answer
    x = 56,883.39

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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.