Home / 81,392,307.70-122,088,461.55-70,432,813.30

Finding the Fourth Proportional to 81,392,307.70, 122,088,461.55 and 70,432,813.30

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Solution

The fourth proportional to 81,392,307.70, 122,088,461.55 and 70,432,813.30 is: 105,649,219.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392,307.70 : 122,088,461.55 = 70,432,813.30 : x
  2. Step 2: Convert to fraction form
    81,392,307.70/122,088,461.55 = 70,432,813.30/x
  3. Step 3: Cross multiply
    81,392,307.70x = 122,088,461.55 × 70,432,813.30
  4. Step 4: Simplify right side
    81,392,307.70x = 8,599,033,818,435,378
  5. Step 5: Solve for x
    x = 8,599,033,818,435,378/81,392,307.70
  6. Step 6: Final answer
    x = 105,649,219.95

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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.