Home / 77,264,128.40-115,910,189.40-38,828,915.60

Finding the Fourth Proportional to 77,264,128.40, 115,910,189.40 and 38,828,915.60

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Solution

The fourth proportional to 77,264,128.40, 115,910,189.40 and 38,828,915.60 is: 58,250,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,264,128.40 : 115,910,189.40 = 38,828,915.60 : x
  2. Step 2: Convert to fraction form
    77,264,128.40/115,910,189.40 = 38,828,915.60/x
  3. Step 3: Cross multiply
    77,264,128.40x = 115,910,189.40 × 38,828,915.60
  4. Step 4: Simplify right side
    77,264,128.40x = 4,500,666,961,392,615
  5. Step 5: Solve for x
    x = 4,500,666,961,392,615/77,264,128.40
  6. Step 6: Final answer
    x = 58,250,407.46

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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.