Finding the Fourth Proportional to 74,679,968.60, 112,019,952.90 and 74,201,671.70
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Solution
The fourth proportional to 74,679,968.60, 112,019,952.90 and 74,201,671.70 is: 111,302,507.55
Step by Step Solution
- Step 1: Write the proportion equation
74,679,968.60 : 112,019,952.90 = 74,201,671.70 : x - Step 2: Convert to fraction form
74,679,968.60/112,019,952.90 = 74,201,671.70/x - Step 3: Cross multiply
74,679,968.60x = 112,019,952.90 × 74,201,671.70 - Step 4: Simplify right side
74,679,968.60x = 8,312,067,768,935,264 - Step 5: Solve for x
x = 8,312,067,768,935,264/74,679,968.60 - Step 6: Final answer
x = 111,302,507.55
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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.