Finding the Fourth Proportional to 77,532,811.80, 106,995,987.92 and 42,726,751.08
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Solution
The fourth proportional to 77,532,811.80, 106,995,987.92 and 42,726,751.08 is: 58,963,306.45
Step by Step Solution
- Step 1: Write the proportion equation
77,532,811.80 : 106,995,987.92 = 42,726,751.08 : x - Step 2: Convert to fraction form
77,532,811.80/106,995,987.92 = 42,726,751.08/x - Step 3: Cross multiply
77,532,811.80x = 106,995,987.92 × 42,726,751.08 - Step 4: Simplify right side
77,532,811.80x = 4,571,590,942,416,527 - Step 5: Solve for x
x = 4,571,590,942,416,527/77,532,811.80 - Step 6: Final answer
x = 58,963,306.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.