Home / 53,111.20-79,570.80-30,906.40

Finding the Fourth Proportional to 53,111.20, 79,570.80 and 30,906.40

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Solution

The fourth proportional to 53,111.20, 79,570.80 and 30,906.40 is: 46,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,111.20 : 79,570.80 = 30,906.40 : x
  2. Step 2: Convert to fraction form
    53,111.20/79,570.80 = 30,906.40/x
  3. Step 3: Cross multiply
    53,111.20x = 79,570.80 × 30,906.40
  4. Step 4: Simplify right side
    53,111.20x = 2,459,246,973.12
  5. Step 5: Solve for x
    x = 2,459,246,973.12/53,111.20
  6. Step 6: Final answer
    x = 46,303.74

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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.