Finding the Fourth Proportional to 77,704,421.06, 107,229,289.91 and 42,896,364.09
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Solution
The fourth proportional to 77,704,421.06, 107,229,289.91 and 42,896,364.09 is: 59,195,430.56
Step by Step Solution
- Step 1: Write the proportion equation
77,704,421.06 : 107,229,289.91 = 42,896,364.09 : x - Step 2: Convert to fraction form
77,704,421.06/107,229,289.91 = 42,896,364.09/x - Step 3: Cross multiply
77,704,421.06x = 107,229,289.91 × 42,896,364.09 - Step 4: Simplify right side
77,704,421.06x = 4,599,746,660,877,042 - Step 5: Solve for x
x = 4,599,746,660,877,042/77,704,421.06 - Step 6: Final answer
x = 59,195,430.56
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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.