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Finding the Fourth Proportional to 84,886.40, 127,183.80 and 40,417.40

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Solution

The fourth proportional to 84,886.40, 127,183.80 and 40,417.40 is: 60,556.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,886.40 : 127,183.80 = 40,417.40 : x
  2. Step 2: Convert to fraction form
    84,886.40/127,183.80 = 40,417.40/x
  3. Step 3: Cross multiply
    84,886.40x = 127,183.80 × 40,417.40
  4. Step 4: Simplify right side
    84,886.40x = 5,140,438,518.12
  5. Step 5: Solve for x
    x = 5,140,438,518.12/84,886.40
  6. Step 6: Final answer
    x = 60,556.68

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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.