Home / 42,070.25-63,115.68-12,488.11

Finding the Fourth Proportional to 42,070.25, 63,115.68 and 12,488.11

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Solution

The fourth proportional to 42,070.25, 63,115.68 and 12,488.11 is: 18,735.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,070.25 : 63,115.68 = 12,488.11 : x
  2. Step 2: Convert to fraction form
    42,070.25/63,115.68 = 12,488.11/x
  3. Step 3: Cross multiply
    42,070.25x = 63,115.68 × 12,488.11
  4. Step 4: Simplify right side
    42,070.25x = 788,195,674.75
  5. Step 5: Solve for x
    x = 788,195,674.75/42,070.25
  6. Step 6: Final answer
    x = 18,735.23

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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.