Home / 77,280,014.40-115,934,018.40-38,844,801.60

Finding the Fourth Proportional to 77,280,014.40, 115,934,018.40 and 38,844,801.60

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Solution

The fourth proportional to 77,280,014.40, 115,934,018.40 and 38,844,801.60 is: 58,274,237.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280,014.40 : 115,934,018.40 = 38,844,801.60 : x
  2. Step 2: Convert to fraction form
    77,280,014.40/115,934,018.40 = 38,844,801.60/x
  3. Step 3: Cross multiply
    77,280,014.40x = 115,934,018.40 × 38,844,801.60
  4. Step 4: Simplify right side
    77,280,014.40x = 4,503,433,943,438,750
  5. Step 5: Solve for x
    x = 4,503,433,943,438,750/77,280,014.40
  6. Step 6: Final answer
    x = 58,274,237.89

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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.