Finding the Fourth Proportional to 93,579.90, 129,138.19 and 51,138.73
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Solution
The fourth proportional to 93,579.90, 129,138.19 and 51,138.73 is: 70,570.32
Step by Step Solution
- Step 1: Write the proportion equation
93,579.90 : 129,138.19 = 51,138.73 : x - Step 2: Convert to fraction form
93,579.90/129,138.19 = 51,138.73/x - Step 3: Cross multiply
93,579.90x = 129,138.19 × 51,138.73 - Step 4: Simplify right side
93,579.90x = 6,603,963,031.10 - Step 5: Solve for x
x = 6,603,963,031.10/93,579.90 - Step 6: Final answer
x = 70,570.32
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1.5x scale
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.