Home / 47,117.20-70,675.80-20,808.40

Finding the Fourth Proportional to 47,117.20, 70,675.80 and 20,808.40

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Solution

The fourth proportional to 47,117.20, 70,675.80 and 20,808.40 is: 31,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,117.20 : 70,675.80 = 20,808.40 : x
  2. Step 2: Convert to fraction form
    47,117.20/70,675.80 = 20,808.40/x
  3. Step 3: Cross multiply
    47,117.20x = 70,675.80 × 20,808.40
  4. Step 4: Simplify right side
    47,117.20x = 1,470,650,316.72
  5. Step 5: Solve for x
    x = 1,470,650,316.72/47,117.20
  6. Step 6: Final answer
    x = 31,212.60

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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.