Home / 55,688.88-83,518.74-20,609.40

Finding the Fourth Proportional to 55,688.88, 83,518.74 and 20,609.40

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Solution

The fourth proportional to 55,688.88, 83,518.74 and 20,609.40 is: 30,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,688.88 : 83,518.74 = 20,609.40 : x
  2. Step 2: Convert to fraction form
    55,688.88/83,518.74 = 20,609.40/x
  3. Step 3: Cross multiply
    55,688.88x = 83,518.74 × 20,609.40
  4. Step 4: Simplify right side
    55,688.88x = 1,721,271,120.16
  5. Step 5: Solve for x
    x = 1,721,271,120.16/55,688.88
  6. Step 6: Final answer
    x = 30,908.70

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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.