Home / 40,746.15-61,129.62-12,666.45

Finding the Fourth Proportional to 40,746.15, 61,129.62 and 12,666.45

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Solution

The fourth proportional to 40,746.15, 61,129.62 and 12,666.45 is: 19,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,746.15 : 61,129.62 = 12,666.45 : x
  2. Step 2: Convert to fraction form
    40,746.15/61,129.62 = 12,666.45/x
  3. Step 3: Cross multiply
    40,746.15x = 61,129.62 × 12,666.45
  4. Step 4: Simplify right side
    40,746.15x = 774,295,025.73
  5. Step 5: Solve for x
    x = 774,295,025.73/40,746.15
  6. Step 6: Final answer
    x = 19,002.90

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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.