Home / 86,209,091.80-129,313,637.70-76,855,730.20

Finding the Fourth Proportional to 86,209,091.80, 129,313,637.70 and 76,855,730.20

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Solution

The fourth proportional to 86,209,091.80, 129,313,637.70 and 76,855,730.20 is: 115,283,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209,091.80 : 129,313,637.70 = 76,855,730.20 : x
  2. Step 2: Convert to fraction form
    86,209,091.80/129,313,637.70 = 76,855,730.20/x
  3. Step 3: Cross multiply
    86,209,091.80x = 129,313,637.70 × 76,855,730.20
  4. Step 4: Simplify right side
    86,209,091.80x = 9,938,494,050,251,750
  5. Step 5: Solve for x
    x = 9,938,494,050,251,750/86,209,091.80
  6. Step 6: Final answer
    x = 115,283,595.30

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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.