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Finding the Fourth Proportional to 43,340.60, 65,023.32 and 21,154.16

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Solution

The fourth proportional to 43,340.60, 65,023.32 and 21,154.16 is: 31,737.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,340.60 : 65,023.32 = 21,154.16 : x
  2. Step 2: Convert to fraction form
    43,340.60/65,023.32 = 21,154.16/x
  3. Step 3: Cross multiply
    43,340.60x = 65,023.32 × 21,154.16
  4. Step 4: Simplify right side
    43,340.60x = 1,375,513,715.01
  5. Step 5: Solve for x
    x = 1,375,513,715.01/43,340.60
  6. Step 6: Final answer
    x = 31,737.30

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1.5x scale

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.