Home / 64,950.12-89,621.55-39,443.19

Finding the Fourth Proportional to 64,950.12, 89,621.55 and 39,443.19

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Solution

The fourth proportional to 64,950.12, 89,621.55 and 39,443.19 is: 54,425.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,950.12 : 89,621.55 = 39,443.19 : x
  2. Step 2: Convert to fraction form
    64,950.12/89,621.55 = 39,443.19/x
  3. Step 3: Cross multiply
    64,950.12x = 89,621.55 × 39,443.19
  4. Step 4: Simplify right side
    64,950.12x = 3,534,959,824.74
  5. Step 5: Solve for x
    x = 3,534,959,824.74/64,950.12
  6. Step 6: Final answer
    x = 54,425.76

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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.