Home / 86,214,618.30-129,321,927.45-76,861,256.70

Finding the Fourth Proportional to 86,214,618.30, 129,321,927.45 and 76,861,256.70

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Solution

The fourth proportional to 86,214,618.30, 129,321,927.45 and 76,861,256.70 is: 115,291,885.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,214,618.30 : 129,321,927.45 = 76,861,256.70 : x
  2. Step 2: Convert to fraction form
    86,214,618.30/129,321,927.45 = 76,861,256.70/x
  3. Step 3: Cross multiply
    86,214,618.30x = 129,321,927.45 × 76,861,256.70
  4. Step 4: Simplify right side
    86,214,618.30x = 9,939,845,862,673,228
  5. Step 5: Solve for x
    x = 9,939,845,862,673,228/86,214,618.30
  6. Step 6: Final answer
    x = 115,291,885.05

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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.