Home / 78,003,856.70-117,005,785.05-55,329,040.70

Finding the Fourth Proportional to 78,003,856.70, 117,005,785.05 and 55,329,040.70

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Solution

The fourth proportional to 78,003,856.70, 117,005,785.05 and 55,329,040.70 is: 82,993,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,856.70 : 117,005,785.05 = 55,329,040.70 : x
  2. Step 2: Convert to fraction form
    78,003,856.70/117,005,785.05 = 55,329,040.70/x
  3. Step 3: Cross multiply
    78,003,856.70x = 117,005,785.05 × 55,329,040.70
  4. Step 4: Simplify right side
    78,003,856.70x = 6,473,817,843,166,902
  5. Step 5: Solve for x
    x = 6,473,817,843,166,902/78,003,856.70
  6. Step 6: Final answer
    x = 82,993,561.05

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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.