Finding the Fourth Proportional to 77,263,542.40, 115,909,310.40 and 38,828,329.60
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Solution
The fourth proportional to 77,263,542.40, 115,909,310.40 and 38,828,329.60 is: 58,249,528.41
Step by Step Solution
- Step 1: Write the proportion equation
77,263,542.40 : 115,909,310.40 = 38,828,329.60 : x - Step 2: Convert to fraction form
77,263,542.40/115,909,310.40 = 38,828,329.60/x - Step 3: Cross multiply
77,263,542.40x = 115,909,310.40 × 38,828,329.60 - Step 4: Simplify right side
77,263,542.40x = 4,500,564,907,919,908 - Step 5: Solve for x
x = 4,500,564,907,919,908/77,263,542.40 - Step 6: Final answer
x = 58,249,528.41
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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.