Home / 64,980.22-89,675.49-38,143.30

Finding the Fourth Proportional to 64,980.22, 89,675.49 and 38,143.30

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Solution

The fourth proportional to 64,980.22, 89,675.49 and 38,143.30 is: 52,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,980.22 : 89,675.49 = 38,143.30 : x
  2. Step 2: Convert to fraction form
    64,980.22/89,675.49 = 38,143.30/x
  3. Step 3: Cross multiply
    64,980.22x = 89,675.49 × 38,143.30
  4. Step 4: Simplify right side
    64,980.22x = 3,420,519,117.72
  5. Step 5: Solve for x
    x = 3,420,519,117.72/64,980.22
  6. Step 6: Final answer
    x = 52,639.39

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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.