Home / 78,756,733.36-118,134,604.32-42,382,257.76

Finding the Fourth Proportional to 78,756,733.36, 118,134,604.32 and 42,382,257.76

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Solution

The fourth proportional to 78,756,733.36, 118,134,604.32 and 42,382,257.76 is: 63,573,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756,733.36 : 118,134,604.32 = 42,382,257.76 : x
  2. Step 2: Convert to fraction form
    78,756,733.36/118,134,604.32 = 42,382,257.76/x
  3. Step 3: Cross multiply
    78,756,733.36x = 118,134,604.32 × 42,382,257.76
  4. Step 4: Simplify right side
    78,756,733.36x = 5,006,811,250,665,849
  5. Step 5: Solve for x
    x = 5,006,811,250,665,849/78,756,733.36
  6. Step 6: Final answer
    x = 63,573,119.87

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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.