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Finding the Fourth Proportional to 76,000.78, 104,881.08 and 42,466.78

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Solution

The fourth proportional to 76,000.78, 104,881.08 and 42,466.78 is: 58,604.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,000.78 : 104,881.08 = 42,466.78 : x
  2. Step 2: Convert to fraction form
    76,000.78/104,881.08 = 42,466.78/x
  3. Step 3: Cross multiply
    76,000.78x = 104,881.08 × 42,466.78
  4. Step 4: Simplify right side
    76,000.78x = 4,453,961,802.00
  5. Step 5: Solve for x
    x = 4,453,961,802.00/76,000.78
  6. Step 6: Final answer
    x = 58,604.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.