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Finding the Fourth Proportional to 55,125.60, 82,630.80 and 30,127.20

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Solution

The fourth proportional to 55,125.60, 82,630.80 and 30,127.20 is: 45,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,125.60 : 82,630.80 = 30,127.20 : x
  2. Step 2: Convert to fraction form
    55,125.60/82,630.80 = 30,127.20/x
  3. Step 3: Cross multiply
    55,125.60x = 82,630.80 × 30,127.20
  4. Step 4: Simplify right side
    55,125.60x = 2,489,434,637.76
  5. Step 5: Solve for x
    x = 2,489,434,637.76/55,125.60
  6. Step 6: Final answer
    x = 45,159.32

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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.