Home / 85,603,561-128,378,368.50-28,082,428.36

Finding the Fourth Proportional to 85,603,561, 128,378,368.50 and 28,082,428.36

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Solution

The fourth proportional to 85,603,561, 128,378,368.50 and 28,082,428.36 is: 42,114,793.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,561 : 128,378,368.50 = 28,082,428.36 : x
  2. Step 2: Convert to fraction form
    85,603,561/128,378,368.50 = 28,082,428.36/x
  3. Step 3: Cross multiply
    85,603,561x = 128,378,368.50 × 28,082,428.36
  4. Step 4: Simplify right side
    85,603,561x = 3,605,176,336,374,930.50
  5. Step 5: Solve for x
    x = 3,605,176,336,374,930.50/85,603,561
  6. Step 6: Final answer
    x = 42,114,793.99

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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.