Finding the Fourth Proportional to 74,903,985.20, 112,355,977.80 and 57,897,873.20
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Solution
The fourth proportional to 74,903,985.20, 112,355,977.80 and 57,897,873.20 is: 86,846,809.80
Step by Step Solution
- Step 1: Write the proportion equation
74,903,985.20 : 112,355,977.80 = 57,897,873.20 : x - Step 2: Convert to fraction form
74,903,985.20/112,355,977.80 = 57,897,873.20/x - Step 3: Cross multiply
74,903,985.20x = 112,355,977.80 × 57,897,873.20 - Step 4: Simplify right side
74,903,985.20x = 6,505,172,155,926,415 - Step 5: Solve for x
x = 6,505,172,155,926,415/74,903,985.20 - Step 6: Final answer
x = 86,846,809.80
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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.