Home / 85,779.48-128,665.10-23,450.12

Finding the Fourth Proportional to 85,779.48, 128,665.10 and 23,450.12

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Solution

The fourth proportional to 85,779.48, 128,665.10 and 23,450.12 is: 35,174.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.48 : 128,665.10 = 23,450.12 : x
  2. Step 2: Convert to fraction form
    85,779.48/128,665.10 = 23,450.12/x
  3. Step 3: Cross multiply
    85,779.48x = 128,665.10 × 23,450.12
  4. Step 4: Simplify right side
    85,779.48x = 3,017,212,034.81
  5. Step 5: Solve for x
    x = 3,017,212,034.81/85,779.48
  6. Step 6: Final answer
    x = 35,174.05

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1.5x scale

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.