Home / 76,927,640.80-115,293,483.60-31,438,040.80

Finding the Fourth Proportional to 76,927,640.80, 115,293,483.60 and 31,438,040.80

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Solution

The fourth proportional to 76,927,640.80, 115,293,483.60 and 31,438,040.80 is: 47,117,020.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,927,640.80 : 115,293,483.60 = 31,438,040.80 : x
  2. Step 2: Convert to fraction form
    76,927,640.80/115,293,483.60 = 31,438,040.80/x
  3. Step 3: Cross multiply
    76,927,640.80x = 115,293,483.60 × 31,438,040.80
  4. Step 4: Simplify right side
    76,927,640.80x = 3,624,601,241,390,931
  5. Step 5: Solve for x
    x = 3,624,601,241,390,931/76,927,640.80
  6. Step 6: Final answer
    x = 47,117,020.67

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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.