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Finding the Fourth Proportional to 115,427.80, 172,866.30 and 56,072.80

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Solution

The fourth proportional to 115,427.80, 172,866.30 and 56,072.80 is: 83,975.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,427.80 : 172,866.30 = 56,072.80 : x
  2. Step 2: Convert to fraction form
    115,427.80/172,866.30 = 56,072.80/x
  3. Step 3: Cross multiply
    115,427.80x = 172,866.30 × 56,072.80
  4. Step 4: Simplify right side
    115,427.80x = 9,693,097,466.64
  5. Step 5: Solve for x
    x = 9,693,097,466.64/115,427.80
  6. Step 6: Final answer
    x = 83,975.42

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1.5x scale

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.