Finding the Fourth Proportional to 39,905,109.24, 55,069,026.42 and 21,570,394.74
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Solution
The fourth proportional to 39,905,109.24, 55,069,026.42 and 21,570,394.74 is: 29,767,131.59
Step by Step Solution
- Step 1: Write the proportion equation
39,905,109.24 : 55,069,026.42 = 21,570,394.74 : x - Step 2: Convert to fraction form
39,905,109.24/55,069,026.42 = 21,570,394.74/x - Step 3: Cross multiply
39,905,109.24x = 55,069,026.42 × 21,570,394.74 - Step 4: Simplify right side
39,905,109.24x = 1,187,860,637,826,889 - Step 5: Solve for x
x = 1,187,860,637,826,889/39,905,109.24 - Step 6: Final answer
x = 29,767,131.59
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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.