Finding the Fourth Proportional to 100,038.08, 138,050.88 and 55,326.08
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Solution
The fourth proportional to 100,038.08, 138,050.88 and 55,326.08 is: 76,349.07
Step by Step Solution
- Step 1: Write the proportion equation
100,038.08 : 138,050.88 = 55,326.08 : x - Step 2: Convert to fraction form
100,038.08/138,050.88 = 55,326.08/x - Step 3: Cross multiply
100,038.08x = 138,050.88 × 55,326.08 - Step 4: Simplify right side
100,038.08x = 7,637,814,030.95 - Step 5: Solve for x
x = 7,637,814,030.95/100,038.08 - Step 6: Final answer
x = 76,349.07
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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.