Home / 77,234.10-115,705.35-39,666.30

Finding the Fourth Proportional to 77,234.10, 115,705.35 and 39,666.30

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Solution

The fourth proportional to 77,234.10, 115,705.35 and 39,666.30 is: 59,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,234.10 : 115,705.35 = 39,666.30 : x
  2. Step 2: Convert to fraction form
    77,234.10/115,705.35 = 39,666.30/x
  3. Step 3: Cross multiply
    77,234.10x = 115,705.35 × 39,666.30
  4. Step 4: Simplify right side
    77,234.10x = 4,589,603,124.71
  5. Step 5: Solve for x
    x = 4,589,603,124.71/77,234.10
  6. Step 6: Final answer
    x = 59,424.57

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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.