Home / 85,314,844.23-128,044,038.90-79,933,998.03

Finding the Fourth Proportional to 85,314,844.23, 128,044,038.90 and 79,933,998.03

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Solution

The fourth proportional to 85,314,844.23, 128,044,038.90 and 79,933,998.03 is: 119,968,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,314,844.23 : 128,044,038.90 = 79,933,998.03 : x
  2. Step 2: Convert to fraction form
    85,314,844.23/128,044,038.90 = 79,933,998.03/x
  3. Step 3: Cross multiply
    85,314,844.23x = 128,044,038.90 × 79,933,998.03
  4. Step 4: Simplify right side
    85,314,844.23x = 10,235,071,953,185,844
  5. Step 5: Solve for x
    x = 10,235,071,953,185,844/85,314,844.23
  6. Step 6: Final answer
    x = 119,968,242.87

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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.