Home / 57,680.10-86,520.15-39,965.40

Finding the Fourth Proportional to 57,680.10, 86,520.15 and 39,965.40

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Solution

The fourth proportional to 57,680.10, 86,520.15 and 39,965.40 is: 59,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,680.10 : 86,520.15 = 39,965.40 : x
  2. Step 2: Convert to fraction form
    57,680.10/86,520.15 = 39,965.40/x
  3. Step 3: Cross multiply
    57,680.10x = 86,520.15 × 39,965.40
  4. Step 4: Simplify right side
    57,680.10x = 3,457,812,402.81
  5. Step 5: Solve for x
    x = 3,457,812,402.81/57,680.10
  6. Step 6: Final answer
    x = 59,948.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.