Finding the Fourth Proportional to 74,679,977.80, 112,019,966.70 and 65,722,025.80
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Solution
The fourth proportional to 74,679,977.80, 112,019,966.70 and 65,722,025.80 is: 98,583,038.70
Step by Step Solution
- Step 1: Write the proportion equation
74,679,977.80 : 112,019,966.70 = 65,722,025.80 : x - Step 2: Convert to fraction form
74,679,977.80/112,019,966.70 = 65,722,025.80/x - Step 3: Cross multiply
74,679,977.80x = 112,019,966.70 × 65,722,025.80 - Step 4: Simplify right side
74,679,977.80x = 7,362,179,141,572,541 - Step 5: Solve for x
x = 7,362,179,141,572,541/74,679,977.80 - Step 6: Final answer
x = 98,583,038.70
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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.