Finding the Fourth Proportional to 43,107,326.40, 64,660,989.60 and 38,430,645.60
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Solution
The fourth proportional to 43,107,326.40, 64,660,989.60 and 38,430,645.60 is: 57,645,968.40
Step by Step Solution
- Step 1: Write the proportion equation
43,107,326.40 : 64,660,989.60 = 38,430,645.60 : x - Step 2: Convert to fraction form
43,107,326.40/64,660,989.60 = 38,430,645.60/x - Step 3: Cross multiply
43,107,326.40x = 64,660,989.60 × 38,430,645.60 - Step 4: Simplify right side
43,107,326.40x = 2,484,963,575,462,886 - Step 5: Solve for x
x = 2,484,963,575,462,886/43,107,326.40 - Step 6: Final answer
x = 57,645,968.40
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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.