Home / 77,279,990.40-115,919,985.60-58,006,396.80

Finding the Fourth Proportional to 77,279,990.40, 115,919,985.60 and 58,006,396.80

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Solution

The fourth proportional to 77,279,990.40, 115,919,985.60 and 58,006,396.80 is: 87,009,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279,990.40 : 115,919,985.60 = 58,006,396.80 : x
  2. Step 2: Convert to fraction form
    77,279,990.40/115,919,985.60 = 58,006,396.80/x
  3. Step 3: Cross multiply
    77,279,990.40x = 115,919,985.60 × 58,006,396.80
  4. Step 4: Simplify right side
    77,279,990.40x = 6,724,100,681,763,885
  5. Step 5: Solve for x
    x = 6,724,100,681,763,885/77,279,990.40
  6. Step 6: Final answer
    x = 87,009,595.20

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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.