Home / 85,855.02-128,779.80-22,673.20

Finding the Fourth Proportional to 85,855.02, 128,779.80 and 22,673.20

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Solution

The fourth proportional to 85,855.02, 128,779.80 and 22,673.20 is: 34,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,855.02 : 128,779.80 = 22,673.20 : x
  2. Step 2: Convert to fraction form
    85,855.02/128,779.80 = 22,673.20/x
  3. Step 3: Cross multiply
    85,855.02x = 128,779.80 × 22,673.20
  4. Step 4: Simplify right side
    85,855.02x = 2,919,850,161.36
  5. Step 5: Solve for x
    x = 2,919,850,161.36/85,855.02
  6. Step 6: Final answer
    x = 34,009.08

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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.