Finding the Fourth Proportional to 98,105,681.64, 135,388,909.98 and 56,297,402.76
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Solution
The fourth proportional to 98,105,681.64, 135,388,909.98 and 56,297,402.76 is: 77,692,177.12
Step by Step Solution
- Step 1: Write the proportion equation
98,105,681.64 : 135,388,909.98 = 56,297,402.76 : x - Step 2: Convert to fraction form
98,105,681.64/135,388,909.98 = 56,297,402.76/x - Step 3: Cross multiply
98,105,681.64x = 135,388,909.98 × 56,297,402.76 - Step 4: Simplify right side
98,105,681.64x = 7,622,043,994,381,443 - Step 5: Solve for x
x = 7,622,043,994,381,443/98,105,681.64 - Step 6: Final answer
x = 77,692,177.12
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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.