Home / 86,207,931.70-129,311,897.55-82,806,709.30

Finding the Fourth Proportional to 86,207,931.70, 129,311,897.55 and 82,806,709.30

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Solution

The fourth proportional to 86,207,931.70, 129,311,897.55 and 82,806,709.30 is: 124,210,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,207,931.70 : 129,311,897.55 = 82,806,709.30 : x
  2. Step 2: Convert to fraction form
    86,207,931.70/129,311,897.55 = 82,806,709.30/x
  3. Step 3: Cross multiply
    86,207,931.70x = 129,311,897.55 × 82,806,709.30
  4. Step 4: Simplify right side
    86,207,931.70x = 10,707,892,709,454,232
  5. Step 5: Solve for x
    x = 10,707,892,709,454,232/86,207,931.70
  6. Step 6: Final answer
    x = 124,210,063.95

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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.