Home / 64,887.41-89,550.90-39,387.87

Finding the Fourth Proportional to 64,887.41, 89,550.90 and 39,387.87

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Solution

The fourth proportional to 64,887.41, 89,550.90 and 39,387.87 is: 54,359.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,887.41 : 89,550.90 = 39,387.87 : x
  2. Step 2: Convert to fraction form
    64,887.41/89,550.90 = 39,387.87/x
  3. Step 3: Cross multiply
    64,887.41x = 89,550.90 × 39,387.87
  4. Step 4: Simplify right side
    64,887.41x = 3,527,219,207.58
  5. Step 5: Solve for x
    x = 3,527,219,207.58/64,887.41
  6. Step 6: Final answer
    x = 54,359.07

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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.