Home / 87,010,787.80-130,404,207.30-66,715,427.80

Finding the Fourth Proportional to 87,010,787.80, 130,404,207.30 and 66,715,427.80

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Solution

The fourth proportional to 87,010,787.80, 130,404,207.30 and 66,715,427.80 is: 99,987,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,010,787.80 : 130,404,207.30 = 66,715,427.80 : x
  2. Step 2: Convert to fraction form
    87,010,787.80/130,404,207.30 = 66,715,427.80/x
  3. Step 3: Cross multiply
    87,010,787.80x = 130,404,207.30 × 66,715,427.80
  4. Step 4: Simplify right side
    87,010,787.80x = 8,699,972,476,939,382
  5. Step 5: Solve for x
    x = 8,699,972,476,939,382/87,010,787.80
  6. Step 6: Final answer
    x = 99,987,285.45

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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.