Home / 81,238.01-112,118.90-45,430.04

Finding the Fourth Proportional to 81,238.01, 112,118.90 and 45,430.04

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Solution

The fourth proportional to 81,238.01, 112,118.90 and 45,430.04 is: 62,699.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,238.01 : 112,118.90 = 45,430.04 : x
  2. Step 2: Convert to fraction form
    81,238.01/112,118.90 = 45,430.04/x
  3. Step 3: Cross multiply
    81,238.01x = 112,118.90 × 45,430.04
  4. Step 4: Simplify right side
    81,238.01x = 5,093,565,324.01
  5. Step 5: Solve for x
    x = 5,093,565,324.01/81,238.01
  6. Step 6: Final answer
    x = 62,699.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.