Home / 78,809,361.60-118,214,042.40-21,300,009.60

Finding the Fourth Proportional to 78,809,361.60, 118,214,042.40 and 21,300,009.60

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Solution

The fourth proportional to 78,809,361.60, 118,214,042.40 and 21,300,009.60 is: 31,950,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809,361.60 : 118,214,042.40 = 21,300,009.60 : x
  2. Step 2: Convert to fraction form
    78,809,361.60/118,214,042.40 = 21,300,009.60/x
  3. Step 3: Cross multiply
    78,809,361.60x = 118,214,042.40 × 21,300,009.60
  4. Step 4: Simplify right side
    78,809,361.60x = 2,517,960,237,974,807.50
  5. Step 5: Solve for x
    x = 2,517,960,237,974,807.50/78,809,361.60
  6. Step 6: Final answer
    x = 31,950,014.40

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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.