Home / 78,392,171.21-108,187,256.00-47,031,400.40

Finding the Fourth Proportional to 78,392,171.21, 108,187,256.00 and 47,031,400.40

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Solution

The fourth proportional to 78,392,171.21, 108,187,256.00 and 47,031,400.40 is: 64,906,968.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392,171.21 : 108,187,256.00 = 47,031,400.40 : x
  2. Step 2: Convert to fraction form
    78,392,171.21/108,187,256.00 = 47,031,400.40/x
  3. Step 3: Cross multiply
    78,392,171.21x = 108,187,256.00 × 47,031,400.40
  4. Step 4: Simplify right side
    78,392,171.21x = 5,088,198,154,689,945
  5. Step 5: Solve for x
    x = 5,088,198,154,689,945/78,392,171.21
  6. Step 6: Final answer
    x = 64,906,968.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.