Home / 53,421.40-80,132.10-28,538.20

Finding the Fourth Proportional to 53,421.40, 80,132.10 and 28,538.20

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Solution

The fourth proportional to 53,421.40, 80,132.10 and 28,538.20 is: 42,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,421.40 : 80,132.10 = 28,538.20 : x
  2. Step 2: Convert to fraction form
    53,421.40/80,132.10 = 28,538.20/x
  3. Step 3: Cross multiply
    53,421.40x = 80,132.10 × 28,538.20
  4. Step 4: Simplify right side
    53,421.40x = 2,286,825,896.22
  5. Step 5: Solve for x
    x = 2,286,825,896.22/53,421.40
  6. Step 6: Final answer
    x = 42,807.30

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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.