Home / 53,777.60-80,647.20-18,718.40

Finding the Fourth Proportional to 53,777.60, 80,647.20 and 18,718.40

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Solution

The fourth proportional to 53,777.60, 80,647.20 and 18,718.40 is: 28,070.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,777.60 : 80,647.20 = 18,718.40 : x
  2. Step 2: Convert to fraction form
    53,777.60/80,647.20 = 18,718.40/x
  3. Step 3: Cross multiply
    53,777.60x = 80,647.20 × 18,718.40
  4. Step 4: Simplify right side
    53,777.60x = 1,509,586,548.48
  5. Step 5: Solve for x
    x = 1,509,586,548.48/53,777.60
  6. Step 6: Final answer
    x = 28,070.92

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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.