Home / 85,534,382.84-128,092,315.41-77,243,906.58

Finding the Fourth Proportional to 85,534,382.84, 128,092,315.41 and 77,243,906.58

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Solution

The fourth proportional to 85,534,382.84, 128,092,315.41 and 77,243,906.58 is: 115,676,883.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,534,382.84 : 128,092,315.41 = 77,243,906.58 : x
  2. Step 2: Convert to fraction form
    85,534,382.84/128,092,315.41 = 77,243,906.58/x
  3. Step 3: Cross multiply
    85,534,382.84x = 128,092,315.41 × 77,243,906.58
  4. Step 4: Simplify right side
    85,534,382.84x = 9,894,350,844,665,588
  5. Step 5: Solve for x
    x = 9,894,350,844,665,588/85,534,382.84
  6. Step 6: Final answer
    x = 115,676,883.57

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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.