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Finding the Fourth Proportional to 45,709.60, 68,564.40 and 16,128.40

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Solution

The fourth proportional to 45,709.60, 68,564.40 and 16,128.40 is: 24,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,709.60 : 68,564.40 = 16,128.40 : x
  2. Step 2: Convert to fraction form
    45,709.60/68,564.40 = 16,128.40/x
  3. Step 3: Cross multiply
    45,709.60x = 68,564.40 × 16,128.40
  4. Step 4: Simplify right side
    45,709.60x = 1,105,834,068.96
  5. Step 5: Solve for x
    x = 1,105,834,068.96/45,709.60
  6. Step 6: Final answer
    x = 24,192.60

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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.