Home / 76,630,517.17-114,845,970.79-31,139,128.69

Finding the Fourth Proportional to 76,630,517.17, 114,845,970.79 and 31,139,128.69

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Solution

The fourth proportional to 76,630,517.17, 114,845,970.79 and 31,139,128.69 is: 46,668,136.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,630,517.17 : 114,845,970.79 = 31,139,128.69 : x
  2. Step 2: Convert to fraction form
    76,630,517.17/114,845,970.79 = 31,139,128.69/x
  3. Step 3: Cross multiply
    76,630,517.17x = 114,845,970.79 × 31,139,128.69
  4. Step 4: Simplify right side
    76,630,517.17x = 3,576,203,463,709,600
  5. Step 5: Solve for x
    x = 3,576,203,463,709,600/76,630,517.17
  6. Step 6: Final answer
    x = 46,668,136.87

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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.