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Finding the Fourth Proportional to 84,273.40, 126,345.30 and 47,337.40

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Solution

The fourth proportional to 84,273.40, 126,345.30 and 47,337.40 is: 70,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,273.40 : 126,345.30 = 47,337.40 : x
  2. Step 2: Convert to fraction form
    84,273.40/126,345.30 = 47,337.40/x
  3. Step 3: Cross multiply
    84,273.40x = 126,345.30 × 47,337.40
  4. Step 4: Simplify right side
    84,273.40x = 5,980,858,004.22
  5. Step 5: Solve for x
    x = 5,980,858,004.22/84,273.40
  6. Step 6: Final answer
    x = 70,969.70

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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.