Home / 86,660,638.74-119,521,948.86-76,184,255.16

Finding the Fourth Proportional to 86,660,638.74, 119,521,948.86 and 76,184,255.16

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Solution

The fourth proportional to 86,660,638.74, 119,521,948.86 and 76,184,255.16 is: 105,072,969.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660,638.74 : 119,521,948.86 = 76,184,255.16 : x
  2. Step 2: Convert to fraction form
    86,660,638.74/119,521,948.86 = 76,184,255.16/x
  3. Step 3: Cross multiply
    86,660,638.74x = 119,521,948.86 × 76,184,255.16
  4. Step 4: Simplify right side
    86,660,638.74x = 9,105,690,649,170,710
  5. Step 5: Solve for x
    x = 9,105,690,649,170,710/86,660,638.74
  6. Step 6: Final answer
    x = 105,072,969.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.