Home / 81,242,942.69-121,860,122.05-26,648,336.81

Finding the Fourth Proportional to 81,242,942.69, 121,860,122.05 and 26,648,336.81

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Solution

The fourth proportional to 81,242,942.69, 121,860,122.05 and 26,648,336.81 is: 39,971,097.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242,942.69 : 121,860,122.05 = 26,648,336.81 : x
  2. Step 2: Convert to fraction form
    81,242,942.69/121,860,122.05 = 26,648,336.81/x
  3. Step 3: Cross multiply
    81,242,942.69x = 121,860,122.05 × 26,648,336.81
  4. Step 4: Simplify right side
    81,242,942.69x = 3,247,369,576,434,068.50
  5. Step 5: Solve for x
    x = 3,247,369,576,434,068.50/81,242,942.69
  6. Step 6: Final answer
    x = 39,971,097.41

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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.