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Finding the Fourth Proportional to 56,425.60, 84,639.62 and 20,888.67

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Solution

The fourth proportional to 56,425.60, 84,639.62 and 20,888.67 is: 31,333.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,425.60 : 84,639.62 = 20,888.67 : x
  2. Step 2: Convert to fraction form
    56,425.60/84,639.62 = 20,888.67/x
  3. Step 3: Cross multiply
    56,425.60x = 84,639.62 × 20,888.67
  4. Step 4: Simplify right side
    56,425.60x = 1,768,009,091.11
  5. Step 5: Solve for x
    x = 1,768,009,091.11/56,425.60
  6. Step 6: Final answer
    x = 31,333.46

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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.