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Finding the Fourth Proportional to 97,879.76, 146,800.20 and 47,938.40

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Solution

The fourth proportional to 97,879.76, 146,800.20 and 47,938.40 is: 71,898.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,879.76 : 146,800.20 = 47,938.40 : x
  2. Step 2: Convert to fraction form
    97,879.76/146,800.20 = 47,938.40/x
  3. Step 3: Cross multiply
    97,879.76x = 146,800.20 × 47,938.40
  4. Step 4: Simplify right side
    97,879.76x = 7,037,366,707.68
  5. Step 5: Solve for x
    x = 7,037,366,707.68/97,879.76
  6. Step 6: Final answer
    x = 71,898.08

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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.