Home / 53,685.20-80,527.80-47,780.30

Finding the Fourth Proportional to 53,685.20, 80,527.80 and 47,780.30

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Solution

The fourth proportional to 53,685.20, 80,527.80 and 47,780.30 is: 71,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,685.20 : 80,527.80 = 47,780.30 : x
  2. Step 2: Convert to fraction form
    53,685.20/80,527.80 = 47,780.30/x
  3. Step 3: Cross multiply
    53,685.20x = 80,527.80 × 47,780.30
  4. Step 4: Simplify right side
    53,685.20x = 3,847,642,442.34
  5. Step 5: Solve for x
    x = 3,847,642,442.34/53,685.20
  6. Step 6: Final answer
    x = 71,670.45

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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.