Home / 86,208,604.80-129,312,907.20-76,855,243.20

Finding the Fourth Proportional to 86,208,604.80, 129,312,907.20 and 76,855,243.20

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Solution

The fourth proportional to 86,208,604.80, 129,312,907.20 and 76,855,243.20 is: 115,282,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208,604.80 : 129,312,907.20 = 76,855,243.20 : x
  2. Step 2: Convert to fraction form
    86,208,604.80/129,312,907.20 = 76,855,243.20/x
  3. Step 3: Cross multiply
    86,208,604.80x = 129,312,907.20 × 76,855,243.20
  4. Step 4: Simplify right side
    86,208,604.80x = 9,938,374,931,755,032
  5. Step 5: Solve for x
    x = 9,938,374,931,755,032/86,208,604.80
  6. Step 6: Final answer
    x = 115,282,864.80

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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.