Finding the Fourth Proportional to 38,761,506.18, 53,493,267.60 and 21,357,848.70
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Solution
The fourth proportional to 38,761,506.18, 53,493,267.60 and 21,357,848.70 is: 29,475,147.60
Step by Step Solution
- Step 1: Write the proportion equation
38,761,506.18 : 53,493,267.60 = 21,357,848.70 : x - Step 2: Convert to fraction form
38,761,506.18/53,493,267.60 = 21,357,848.70/x - Step 3: Cross multiply
38,761,506.18x = 53,493,267.60 × 21,357,848.70 - Step 4: Simplify right side
38,761,506.18x = 1,142,501,115,869,412 - Step 5: Solve for x
x = 1,142,501,115,869,412/38,761,506.18 - Step 6: Final answer
x = 29,475,147.60
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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.