Finding the Fourth Proportional to 93,985.17, 129,678.53 and 53,686.05
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Solution
The fourth proportional to 93,985.17, 129,678.53 and 53,686.05 is: 74,074.75
Step by Step Solution
- Step 1: Write the proportion equation
93,985.17 : 129,678.53 = 53,686.05 : x - Step 2: Convert to fraction form
93,985.17/129,678.53 = 53,686.05/x - Step 3: Cross multiply
93,985.17x = 129,678.53 × 53,686.05 - Step 4: Simplify right side
93,985.17x = 6,961,928,045.51 - Step 5: Solve for x
x = 6,961,928,045.51/93,985.17 - Step 6: Final answer
x = 74,074.75
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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.