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Finding the Fourth Proportional to 55,987.20, 80,870.40 and 55,987.20

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Solution

The fourth proportional to 55,987.20, 80,870.40 and 55,987.20 is: 80,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,987.20 : 80,870.40 = 55,987.20 : x
  2. Step 2: Convert to fraction form
    55,987.20/80,870.40 = 55,987.20/x
  3. Step 3: Cross multiply
    55,987.20x = 80,870.40 × 55,987.20
  4. Step 4: Simplify right side
    55,987.20x = 4,527,707,258.88
  5. Step 5: Solve for x
    x = 4,527,707,258.88/55,987.20
  6. Step 6: Final answer
    x = 80,870.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.