Home / 76,705,124.60-115,128,545.70-38,394,133.40

Finding the Fourth Proportional to 76,705,124.60, 115,128,545.70 and 38,394,133.40

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Solution

The fourth proportional to 76,705,124.60, 115,128,545.70 and 38,394,133.40 is: 57,626,667.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,705,124.60 : 115,128,545.70 = 38,394,133.40 : x
  2. Step 2: Convert to fraction form
    76,705,124.60/115,128,545.70 = 38,394,133.40/x
  3. Step 3: Cross multiply
    76,705,124.60x = 115,128,545.70 × 38,394,133.40
  4. Step 4: Simplify right side
    76,705,124.60x = 4,420,260,741,753,796.50
  5. Step 5: Solve for x
    x = 4,420,260,741,753,796.50/76,705,124.60
  6. Step 6: Final answer
    x = 57,626,667.90

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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.