Finding the Fourth Proportional to 70,862,955.20, 97,790,877.60 and 38,267,904.32
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Solution
The fourth proportional to 70,862,955.20, 97,790,877.60 and 38,267,904.32 is: 52,809,707.65
Step by Step Solution
- Step 1: Write the proportion equation
70,862,955.20 : 97,790,877.60 = 38,267,904.32 : x - Step 2: Convert to fraction form
70,862,955.20/97,790,877.60 = 38,267,904.32/x - Step 3: Cross multiply
70,862,955.20x = 97,790,877.60 × 38,267,904.32 - Step 4: Simplify right side
70,862,955.20x = 3,742,251,947,365,631 - Step 5: Solve for x
x = 3,742,251,947,365,631/70,862,955.20 - Step 6: Final answer
x = 52,809,707.65
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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.