Home / 78,883,409.40-118,325,114.10-53,403,012.60

Finding the Fourth Proportional to 78,883,409.40, 118,325,114.10 and 53,403,012.60

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Solution

The fourth proportional to 78,883,409.40, 118,325,114.10 and 53,403,012.60 is: 80,104,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,883,409.40 : 118,325,114.10 = 53,403,012.60 : x
  2. Step 2: Convert to fraction form
    78,883,409.40/118,325,114.10 = 53,403,012.60/x
  3. Step 3: Cross multiply
    78,883,409.40x = 118,325,114.10 × 53,403,012.60
  4. Step 4: Simplify right side
    78,883,409.40x = 6,318,917,559,178,738
  5. Step 5: Solve for x
    x = 6,318,917,559,178,738/78,883,409.40
  6. Step 6: Final answer
    x = 80,104,518.90

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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.