Home / 55,637.40-76,779.10-30,143.18

Finding the Fourth Proportional to 55,637.40, 76,779.10 and 30,143.18

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Solution

The fourth proportional to 55,637.40, 76,779.10 and 30,143.18 is: 41,597.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,637.40 : 76,779.10 = 30,143.18 : x
  2. Step 2: Convert to fraction form
    55,637.40/76,779.10 = 30,143.18/x
  3. Step 3: Cross multiply
    55,637.40x = 76,779.10 × 30,143.18
  4. Step 4: Simplify right side
    55,637.40x = 2,314,366,231.54
  5. Step 5: Solve for x
    x = 2,314,366,231.54/55,637.40
  6. Step 6: Final answer
    x = 41,597.31

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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.