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Finding the Fourth Proportional to 40,686.70, 61,030.04 and 11,105.32

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Solution

The fourth proportional to 40,686.70, 61,030.04 and 11,105.32 is: 16,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,686.70 : 61,030.04 = 11,105.32 : x
  2. Step 2: Convert to fraction form
    40,686.70/61,030.04 = 11,105.32/x
  3. Step 3: Cross multiply
    40,686.70x = 61,030.04 × 11,105.32
  4. Step 4: Simplify right side
    40,686.70x = 677,757,999.00
  5. Step 5: Solve for x
    x = 677,757,999.00/40,686.70
  6. Step 6: Final answer
    x = 16,657.98

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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.