Finding the Fourth Proportional to 38,850,634.40, 58,292,281.20 and 20,878,743.20
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Solution
The fourth proportional to 38,850,634.40, 58,292,281.20 and 20,878,743.20 is: 31,326,890.50
Step by Step Solution
- Step 1: Write the proportion equation
38,850,634.40 : 58,292,281.20 = 20,878,743.20 : x - Step 2: Convert to fraction form
38,850,634.40/58,292,281.20 = 20,878,743.20/x - Step 3: Cross multiply
38,850,634.40x = 58,292,281.20 × 20,878,743.20 - Step 4: Simplify right side
38,850,634.40x = 1,217,069,569,716,987.75 - Step 5: Solve for x
x = 1,217,069,569,716,987.75/38,850,634.40 - Step 6: Final answer
x = 31,326,890.50
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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.