Home / 63,643.98-87,829.18-39,784.70

Finding the Fourth Proportional to 63,643.98, 87,829.18 and 39,784.70

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Solution

The fourth proportional to 63,643.98, 87,829.18 and 39,784.70 is: 54,903.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,643.98 : 87,829.18 = 39,784.70 : x
  2. Step 2: Convert to fraction form
    63,643.98/87,829.18 = 39,784.70/x
  3. Step 3: Cross multiply
    63,643.98x = 87,829.18 × 39,784.70
  4. Step 4: Simplify right side
    63,643.98x = 3,494,257,577.55
  5. Step 5: Solve for x
    x = 3,494,257,577.55/63,643.98
  6. Step 6: Final answer
    x = 54,903.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.