Home / 78,624,040.60-117,936,060.90-71,569,653.40

Finding the Fourth Proportional to 78,624,040.60, 117,936,060.90 and 71,569,653.40

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Solution

The fourth proportional to 78,624,040.60, 117,936,060.90 and 71,569,653.40 is: 107,354,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,040.60 : 117,936,060.90 = 71,569,653.40 : x
  2. Step 2: Convert to fraction form
    78,624,040.60/117,936,060.90 = 71,569,653.40/x
  3. Step 3: Cross multiply
    78,624,040.60x = 117,936,060.90 × 71,569,653.40
  4. Step 4: Simplify right side
    78,624,040.60x = 8,440,643,001,974,293
  5. Step 5: Solve for x
    x = 8,440,643,001,974,293/78,624,040.60
  6. Step 6: Final answer
    x = 107,354,480.10

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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.