Finding the Fourth Proportional to 86,939,809.80, 130,409,714.70 and 61,430,641.80
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Solution
The fourth proportional to 86,939,809.80, 130,409,714.70 and 61,430,641.80 is: 92,145,962.70
Step by Step Solution
- Step 1: Write the proportion equation
86,939,809.80 : 130,409,714.70 = 61,430,641.80 : x - Step 2: Convert to fraction form
86,939,809.80/130,409,714.70 = 61,430,641.80/x - Step 3: Cross multiply
86,939,809.80x = 130,409,714.70 × 61,430,641.80 - Step 4: Simplify right side
86,939,809.80x = 8,011,152,470,975,894 - Step 5: Solve for x
x = 8,011,152,470,975,894/86,939,809.80 - Step 6: Final answer
x = 92,145,962.70
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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.