Home / 64,653.12-89,124.96-39,485.76

Finding the Fourth Proportional to 64,653.12, 89,124.96 and 39,485.76

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Solution

The fourth proportional to 64,653.12, 89,124.96 and 39,485.76 is: 54,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.12 : 89,124.96 = 39,485.76 : x
  2. Step 2: Convert to fraction form
    64,653.12/89,124.96 = 39,485.76/x
  3. Step 3: Cross multiply
    64,653.12x = 89,124.96 × 39,485.76
  4. Step 4: Simplify right side
    64,653.12x = 3,519,166,780.57
  5. Step 5: Solve for x
    x = 3,519,166,780.57/64,653.12
  6. Step 6: Final answer
    x = 54,431.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.