Home / 78,757,848.05-118,136,772.09-21,250,119.20

Finding the Fourth Proportional to 78,757,848.05, 118,136,772.09 and 21,250,119.20

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Solution

The fourth proportional to 78,757,848.05, 118,136,772.09 and 21,250,119.20 is: 31,875,178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,757,848.05 : 118,136,772.09 = 21,250,119.20 : x
  2. Step 2: Convert to fraction form
    78,757,848.05/118,136,772.09 = 21,250,119.20/x
  3. Step 3: Cross multiply
    78,757,848.05x = 118,136,772.09 × 21,250,119.20
  4. Step 4: Simplify right side
    78,757,848.05x = 2,510,420,488,225,049.50
  5. Step 5: Solve for x
    x = 2,510,420,488,225,049.50/78,757,848.05
  6. Step 6: Final answer
    x = 31,875,178.80

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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.