Finding the Fourth Proportional to 81,657,006.60, 122,485,509.90 and 40,842,337.80
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Solution
The fourth proportional to 81,657,006.60, 122,485,509.90 and 40,842,337.80 is: 61,263,506.70
Step by Step Solution
- Step 1: Write the proportion equation
81,657,006.60 : 122,485,509.90 = 40,842,337.80 : x - Step 2: Convert to fraction form
81,657,006.60/122,485,509.90 = 40,842,337.80/x - Step 3: Cross multiply
81,657,006.60x = 122,485,509.90 × 40,842,337.80 - Step 4: Simplify right side
81,657,006.60x = 5,002,594,570,941,044 - Step 5: Solve for x
x = 5,002,594,570,941,044/81,657,006.60 - Step 6: Final answer
x = 61,263,506.70
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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.