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Finding the Fourth Proportional to 71,430.88, 106,830.96 and 43,273.12

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Solution

The fourth proportional to 71,430.88, 106,830.96 and 43,273.12 is: 64,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430.88 : 106,830.96 = 43,273.12 : x
  2. Step 2: Convert to fraction form
    71,430.88/106,830.96 = 43,273.12/x
  3. Step 3: Cross multiply
    71,430.88x = 106,830.96 × 43,273.12
  4. Step 4: Simplify right side
    71,430.88x = 4,622,908,951.80
  5. Step 5: Solve for x
    x = 4,622,908,951.80/71,430.88
  6. Step 6: Final answer
    x = 64,718.63

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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.