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Finding the Fourth Proportional to 80,886.70, 111,548.63 and 55,430.02

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Solution

The fourth proportional to 80,886.70, 111,548.63 and 55,430.02 is: 76,442.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,886.70 : 111,548.63 = 55,430.02 : x
  2. Step 2: Convert to fraction form
    80,886.70/111,548.63 = 55,430.02/x
  3. Step 3: Cross multiply
    80,886.70x = 111,548.63 × 55,430.02
  4. Step 4: Simplify right side
    80,886.70x = 6,183,141,956.98
  5. Step 5: Solve for x
    x = 6,183,141,956.98/80,886.70
  6. Step 6: Final answer
    x = 76,442.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.