Home / 78,624,041.60-117,936,062.40-71,569,654.40

Finding the Fourth Proportional to 78,624,041.60, 117,936,062.40 and 71,569,654.40

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Solution

The fourth proportional to 78,624,041.60, 117,936,062.40 and 71,569,654.40 is: 107,354,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,041.60 : 117,936,062.40 = 71,569,654.40 : x
  2. Step 2: Convert to fraction form
    78,624,041.60/117,936,062.40 = 71,569,654.40/x
  3. Step 3: Cross multiply
    78,624,041.60x = 117,936,062.40 × 71,569,654.40
  4. Step 4: Simplify right side
    78,624,041.60x = 8,440,643,227,264,836
  5. Step 5: Solve for x
    x = 8,440,643,227,264,836/78,624,041.60
  6. Step 6: Final answer
    x = 107,354,481.60

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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.