Finding the Fourth Proportional to 86,689,664.80, 130,034,497.20 and 78,753,479.20
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Solution
The fourth proportional to 86,689,664.80, 130,034,497.20 and 78,753,479.20 is: 118,130,218.80
Step by Step Solution
- Step 1: Write the proportion equation
86,689,664.80 : 130,034,497.20 = 78,753,479.20 : x - Step 2: Convert to fraction form
86,689,664.80/130,034,497.20 = 78,753,479.20/x - Step 3: Cross multiply
86,689,664.80x = 130,034,497.20 × 78,753,479.20 - Step 4: Simplify right side
86,689,664.80x = 10,240,669,070,522,658 - Step 5: Solve for x
x = 10,240,669,070,522,658/86,689,664.80 - Step 6: Final answer
x = 118,130,218.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.