Finding the Fourth Proportional to 86,824,611.80, 130,124,943.30 and 66,529,251.80
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Solution
The fourth proportional to 86,824,611.80, 130,124,943.30 and 66,529,251.80 is: 99,708,077.45
Step by Step Solution
- Step 1: Write the proportion equation
86,824,611.80 : 130,124,943.30 = 66,529,251.80 : x - Step 2: Convert to fraction form
86,824,611.80/130,124,943.30 = 66,529,251.80/x - Step 3: Cross multiply
86,824,611.80x = 130,124,943.30 × 66,529,251.80 - Step 4: Simplify right side
86,824,611.80x = 8,657,115,118,266,422 - Step 5: Solve for x
x = 8,657,115,118,266,422/86,824,611.80 - Step 6: Final answer
x = 99,708,077.45
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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.