Finding the Fourth Proportional to 97,320.70, 145,981.05 and 77,637.70
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Solution
The fourth proportional to 97,320.70, 145,981.05 and 77,637.70 is: 116,456.55
Step by Step Solution
- Step 1: Write the proportion equation
97,320.70 : 145,981.05 = 77,637.70 : x - Step 2: Convert to fraction form
97,320.70/145,981.05 = 77,637.70/x - Step 3: Cross multiply
97,320.70x = 145,981.05 × 77,637.70 - Step 4: Simplify right side
97,320.70x = 11,333,632,965.59 - Step 5: Solve for x
x = 11,333,632,965.59/97,320.70 - Step 6: Final answer
x = 116,456.55
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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.