Finding the Fourth Proportional to 83,975,432.60, 115,622,369.06 and 71,391,726.20
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Solution
The fourth proportional to 83,975,432.60, 115,622,369.06 and 71,391,726.20 is: 98,296,373.82
Step by Step Solution
- Step 1: Write the proportion equation
83,975,432.60 : 115,622,369.06 = 71,391,726.20 : x - Step 2: Convert to fraction form
83,975,432.60/115,622,369.06 = 71,391,726.20/x - Step 3: Cross multiply
83,975,432.60x = 115,622,369.06 × 71,391,726.20 - Step 4: Simplify right side
83,975,432.60x = 8,254,480,514,458,969 - Step 5: Solve for x
x = 8,254,480,514,458,969/83,975,432.60 - Step 6: Final answer
x = 98,296,373.82
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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.