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Finding the Fourth Proportional to 84,907.83, 127,384.71 and 28,747.94

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Solution

The fourth proportional to 84,907.83, 127,384.71 and 28,747.94 is: 43,129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,907.83 : 127,384.71 = 28,747.94 : x
  2. Step 2: Convert to fraction form
    84,907.83/127,384.71 = 28,747.94/x
  3. Step 3: Cross multiply
    84,907.83x = 127,384.71 × 28,747.94
  4. Step 4: Simplify right side
    84,907.83x = 3,662,047,363.07
  5. Step 5: Solve for x
    x = 3,662,047,363.07/84,907.83
  6. Step 6: Final answer
    x = 43,129.68

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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.