Finding the Fourth Proportional to 66,438,117.80, 99,657,176.70 and 64,945,125.80
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Solution
The fourth proportional to 66,438,117.80, 99,657,176.70 and 64,945,125.80 is: 97,417,688.70
Step by Step Solution
- Step 1: Write the proportion equation
66,438,117.80 : 99,657,176.70 = 64,945,125.80 : x - Step 2: Convert to fraction form
66,438,117.80/99,657,176.70 = 64,945,125.80/x - Step 3: Cross multiply
66,438,117.80x = 99,657,176.70 × 64,945,125.80 - Step 4: Simplify right side
66,438,117.80x = 6,472,247,877,654,329 - Step 5: Solve for x
x = 6,472,247,877,654,329/66,438,117.80 - Step 6: Final answer
x = 97,417,688.70
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1.5x scale
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.