Finding the Fourth Proportional to 86,985.08, 120,037.36 and 51,177.40
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Solution
The fourth proportional to 86,985.08, 120,037.36 and 51,177.40 is: 70,623.61
Step by Step Solution
- Step 1: Write the proportion equation
86,985.08 : 120,037.36 = 51,177.40 : x - Step 2: Convert to fraction form
86,985.08/120,037.36 = 51,177.40/x - Step 3: Cross multiply
86,985.08x = 120,037.36 × 51,177.40 - Step 4: Simplify right side
86,985.08x = 6,143,199,987.66 - Step 5: Solve for x
x = 6,143,199,987.66/86,985.08 - Step 6: Final answer
x = 70,623.61
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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.