Finding the Fourth Proportional to 86,907,869.70, 130,361,804.55 and 39,132,125.70
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Solution
The fourth proportional to 86,907,869.70, 130,361,804.55 and 39,132,125.70 is: 58,698,188.55
Step by Step Solution
- Step 1: Write the proportion equation
86,907,869.70 : 130,361,804.55 = 39,132,125.70 : x - Step 2: Convert to fraction form
86,907,869.70/130,361,804.55 = 39,132,125.70/x - Step 3: Cross multiply
86,907,869.70x = 130,361,804.55 × 39,132,125.70 - Step 4: Simplify right side
86,907,869.70x = 5,101,334,522,129,432 - Step 5: Solve for x
x = 5,101,334,522,129,432/86,907,869.70 - Step 6: Final answer
x = 58,698,188.55
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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.