Finding the Fourth Proportional to 98,655.30, 136,143.99 and 56,221.02
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Solution
The fourth proportional to 98,655.30, 136,143.99 and 56,221.02 is: 77,584.82
Step by Step Solution
- Step 1: Write the proportion equation
98,655.30 : 136,143.99 = 56,221.02 : x - Step 2: Convert to fraction form
98,655.30/136,143.99 = 56,221.02/x - Step 3: Cross multiply
98,655.30x = 136,143.99 × 56,221.02 - Step 4: Simplify right side
98,655.30x = 7,654,153,984.67 - Step 5: Solve for x
x = 7,654,153,984.67/98,655.30 - Step 6: Final answer
x = 77,584.82
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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.