Home / 85,963,567.90-128,945,351.85-76,557,718.30

Finding the Fourth Proportional to 85,963,567.90, 128,945,351.85 and 76,557,718.30

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Solution

The fourth proportional to 85,963,567.90, 128,945,351.85 and 76,557,718.30 is: 114,836,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,963,567.90 : 128,945,351.85 = 76,557,718.30 : x
  2. Step 2: Convert to fraction form
    85,963,567.90/128,945,351.85 = 76,557,718.30/x
  3. Step 3: Cross multiply
    85,963,567.90x = 128,945,351.85 × 76,557,718.30
  4. Step 4: Simplify right side
    85,963,567.90x = 9,871,761,923,026,684
  5. Step 5: Solve for x
    x = 9,871,761,923,026,684/85,963,567.90
  6. Step 6: Final answer
    x = 114,836,577.45

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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.