Finding the Fourth Proportional to 42,209,813.92, 63,319,311.60 and 13,449,189.28
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Solution
The fourth proportional to 42,209,813.92, 63,319,311.60 and 13,449,189.28 is: 20,175,246.65
Step by Step Solution
- Step 1: Write the proportion equation
42,209,813.92 : 63,319,311.60 = 13,449,189.28 : x - Step 2: Convert to fraction form
42,209,813.92/63,319,311.60 = 13,449,189.28/x - Step 3: Cross multiply
42,209,813.92x = 63,319,311.60 × 13,449,189.28 - Step 4: Simplify right side
42,209,813.92x = 851,593,406,787,699.62 - Step 5: Solve for x
x = 851,593,406,787,699.62/42,209,813.92 - Step 6: Final answer
x = 20,175,246.65
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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.