Home / 83,569.64-125,352.63-20,390.31

Finding the Fourth Proportional to 83,569.64, 125,352.63 and 20,390.31

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Solution

The fourth proportional to 83,569.64, 125,352.63 and 20,390.31 is: 30,585.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,569.64 : 125,352.63 = 20,390.31 : x
  2. Step 2: Convert to fraction form
    83,569.64/125,352.63 = 20,390.31/x
  3. Step 3: Cross multiply
    83,569.64x = 125,352.63 × 20,390.31
  4. Step 4: Simplify right side
    83,569.64x = 2,555,978,985.02
  5. Step 5: Solve for x
    x = 2,555,978,985.02/83,569.64
  6. Step 6: Final answer
    x = 30,585.02

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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.