Finding the Fourth Proportional to 72,692,257.68, 100,315,956.40 and 39,652,653.74
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Solution
The fourth proportional to 72,692,257.68, 100,315,956.40 and 39,652,653.74 is: 54,721,011.70
Step by Step Solution
- Step 1: Write the proportion equation
72,692,257.68 : 100,315,956.40 = 39,652,653.74 : x - Step 2: Convert to fraction form
72,692,257.68/100,315,956.40 = 39,652,653.74/x - Step 3: Cross multiply
72,692,257.68x = 100,315,956.40 × 39,652,653.74 - Step 4: Simplify right side
72,692,257.68x = 3,977,793,883,125,425 - Step 5: Solve for x
x = 3,977,793,883,125,425/72,692,257.68 - Step 6: Final answer
x = 54,721,011.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.