Home / 77,193,792.60-115,790,688.90-66,432,112.35

Finding the Fourth Proportional to 77,193,792.60, 115,790,688.90 and 66,432,112.35

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Solution

The fourth proportional to 77,193,792.60, 115,790,688.90 and 66,432,112.35 is: 99,648,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,193,792.60 : 115,790,688.90 = 66,432,112.35 : x
  2. Step 2: Convert to fraction form
    77,193,792.60/115,790,688.90 = 66,432,112.35/x
  3. Step 3: Cross multiply
    77,193,792.60x = 115,790,688.90 × 66,432,112.35
  4. Step 4: Simplify right side
    77,193,792.60x = 7,692,220,054,088,698
  5. Step 5: Solve for x
    x = 7,692,220,054,088,698/77,193,792.60
  6. Step 6: Final answer
    x = 99,648,168.53

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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.