Home / 78,881,090.40-118,321,635.60-53,400,693.60

Finding the Fourth Proportional to 78,881,090.40, 118,321,635.60 and 53,400,693.60

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Solution

The fourth proportional to 78,881,090.40, 118,321,635.60 and 53,400,693.60 is: 80,101,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881,090.40 : 118,321,635.60 = 53,400,693.60 : x
  2. Step 2: Convert to fraction form
    78,881,090.40/118,321,635.60 = 53,400,693.60/x
  3. Step 3: Cross multiply
    78,881,090.40x = 118,321,635.60 × 53,400,693.60
  4. Step 4: Simplify right side
    78,881,090.40x = 6,318,457,408,926,452
  5. Step 5: Solve for x
    x = 6,318,457,408,926,452/78,881,090.40
  6. Step 6: Final answer
    x = 80,101,040.40

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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.