Home / 85,673,328.60-128,225,814-78,014,673.24

Finding the Fourth Proportional to 85,673,328.60, 128,225,814 and 78,014,673.24

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Solution

The fourth proportional to 85,673,328.60, 128,225,814 and 78,014,673.24 is: 116,763,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,673,328.60 : 128,225,814 = 78,014,673.24 : x
  2. Step 2: Convert to fraction form
    85,673,328.60/128,225,814 = 78,014,673.24/x
  3. Step 3: Cross multiply
    85,673,328.60x = 128,225,814 × 78,014,673.24
  4. Step 4: Simplify right side
    85,673,328.60x = 10,003,494,980,143,016
  5. Step 5: Solve for x
    x = 10,003,494,980,143,016/85,673,328.60
  6. Step 6: Final answer
    x = 116,763,234.76

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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.