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Finding the Fourth Proportional to 42,681.76, 64,005.52 and 17,704.80

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Solution

The fourth proportional to 42,681.76, 64,005.52 and 17,704.80 is: 26,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,681.76 : 64,005.52 = 17,704.80 : x
  2. Step 2: Convert to fraction form
    42,681.76/64,005.52 = 17,704.80/x
  3. Step 3: Cross multiply
    42,681.76x = 64,005.52 × 17,704.80
  4. Step 4: Simplify right side
    42,681.76x = 1,133,204,930.50
  5. Step 5: Solve for x
    x = 1,133,204,930.50/42,681.76
  6. Step 6: Final answer
    x = 26,550.10

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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.