Home / 53,438.99-80,158.40-21,432.50

Finding the Fourth Proportional to 53,438.99, 80,158.40 and 21,432.50

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Solution

The fourth proportional to 53,438.99, 80,158.40 and 21,432.50 is: 32,148.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,438.99 : 80,158.40 = 21,432.50 : x
  2. Step 2: Convert to fraction form
    53,438.99/80,158.40 = 21,432.50/x
  3. Step 3: Cross multiply
    53,438.99x = 80,158.40 × 21,432.50
  4. Step 4: Simplify right side
    53,438.99x = 1,717,994,560.79
  5. Step 5: Solve for x
    x = 1,717,994,560.79/53,438.99
  6. Step 6: Final answer
    x = 32,148.71

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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.