Home / 85,968,145.80-128,952,218.70-58,758,366.60

Finding the Fourth Proportional to 85,968,145.80, 128,952,218.70 and 58,758,366.60

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Solution

The fourth proportional to 85,968,145.80, 128,952,218.70 and 58,758,366.60 is: 88,137,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,145.80 : 128,952,218.70 = 58,758,366.60 : x
  2. Step 2: Convert to fraction form
    85,968,145.80/128,952,218.70 = 58,758,366.60/x
  3. Step 3: Cross multiply
    85,968,145.80x = 128,952,218.70 × 58,758,366.60
  4. Step 4: Simplify right side
    85,968,145.80x = 7,577,021,740,257,976
  5. Step 5: Solve for x
    x = 7,577,021,740,257,976/85,968,145.80
  6. Step 6: Final answer
    x = 88,137,549.90

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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.