Finding the Fourth Proportional to 77,312,342.40, 115,982,510.40 and 38,877,129.60
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Solution
The fourth proportional to 77,312,342.40, 115,982,510.40 and 38,877,129.60 is: 58,322,732.80
Step by Step Solution
- Step 1: Write the proportion equation
77,312,342.40 : 115,982,510.40 = 38,877,129.60 : x - Step 2: Convert to fraction form
77,312,342.40/115,982,510.40 = 38,877,129.60/x - Step 3: Cross multiply
77,312,342.40x = 115,982,510.40 × 38,877,129.60 - Step 4: Simplify right side
77,312,342.40x = 4,509,067,088,154,148 - Step 5: Solve for x
x = 4,509,067,088,154,148/77,312,342.40 - Step 6: Final answer
x = 58,322,732.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.