Home / 86,290,438.45-129,436,141.54-28,782,551.74

Finding the Fourth Proportional to 86,290,438.45, 129,436,141.54 and 28,782,551.74

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Solution

The fourth proportional to 86,290,438.45, 129,436,141.54 and 28,782,551.74 is: 43,173,989.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,290,438.45 : 129,436,141.54 = 28,782,551.74 : x
  2. Step 2: Convert to fraction form
    86,290,438.45/129,436,141.54 = 28,782,551.74/x
  3. Step 3: Cross multiply
    86,290,438.45x = 129,436,141.54 × 28,782,551.74
  4. Step 4: Simplify right side
    86,290,438.45x = 3,725,502,440,901,013.50
  5. Step 5: Solve for x
    x = 3,725,502,440,901,013.50/86,290,438.45
  6. Step 6: Final answer
    x = 43,173,989.01

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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.