Home / 85,698,821.10-128,548,231.65-73,369,389.90

Finding the Fourth Proportional to 85,698,821.10, 128,548,231.65 and 73,369,389.90

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Solution

The fourth proportional to 85,698,821.10, 128,548,231.65 and 73,369,389.90 is: 110,054,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,698,821.10 : 128,548,231.65 = 73,369,389.90 : x
  2. Step 2: Convert to fraction form
    85,698,821.10/128,548,231.65 = 73,369,389.90/x
  3. Step 3: Cross multiply
    85,698,821.10x = 128,548,231.65 × 73,369,389.90
  4. Step 4: Simplify right side
    85,698,821.10x = 9,431,505,328,884,372
  5. Step 5: Solve for x
    x = 9,431,505,328,884,372/85,698,821.10
  6. Step 6: Final answer
    x = 110,054,084.85

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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.