Home / 64,900.17-89,568.50-39,400.62

Finding the Fourth Proportional to 64,900.17, 89,568.50 and 39,400.62

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Solution

The fourth proportional to 64,900.17, 89,568.50 and 39,400.62 is: 54,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,900.17 : 89,568.50 = 39,400.62 : x
  2. Step 2: Convert to fraction form
    64,900.17/89,568.50 = 39,400.62/x
  3. Step 3: Cross multiply
    64,900.17x = 89,568.50 × 39,400.62
  4. Step 4: Simplify right side
    64,900.17x = 3,529,054,432.47
  5. Step 5: Solve for x
    x = 3,529,054,432.47/64,900.17
  6. Step 6: Final answer
    x = 54,376.66

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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.