Home / 86,022,021.40-129,033,032.10-76,616,171.80

Finding the Fourth Proportional to 86,022,021.40, 129,033,032.10 and 76,616,171.80

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Solution

The fourth proportional to 86,022,021.40, 129,033,032.10 and 76,616,171.80 is: 114,924,257.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,022,021.40 : 129,033,032.10 = 76,616,171.80 : x
  2. Step 2: Convert to fraction form
    86,022,021.40/129,033,032.10 = 76,616,171.80/x
  3. Step 3: Cross multiply
    86,022,021.40x = 129,033,032.10 × 76,616,171.80
  4. Step 4: Simplify right side
    86,022,021.40x = 9,886,016,955,248,514
  5. Step 5: Solve for x
    x = 9,886,016,955,248,514/86,022,021.40
  6. Step 6: Final answer
    x = 114,924,257.70

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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.