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Finding the Fourth Proportional to 63,870.80, 95,820.60 and 19,499.60

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Solution

The fourth proportional to 63,870.80, 95,820.60 and 19,499.60 is: 29,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,870.80 : 95,820.60 = 19,499.60 : x
  2. Step 2: Convert to fraction form
    63,870.80/95,820.60 = 19,499.60/x
  3. Step 3: Cross multiply
    63,870.80x = 95,820.60 × 19,499.60
  4. Step 4: Simplify right side
    63,870.80x = 1,868,463,371.76
  5. Step 5: Solve for x
    x = 1,868,463,371.76/63,870.80
  6. Step 6: Final answer
    x = 29,253.80

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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.