Finding the Fourth Proportional to 77,708,137.94, 107,236,675.14 and 42,425,941.94
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Solution
The fourth proportional to 77,708,137.94, 107,236,675.14 and 42,425,941.94 is: 58,547,496.75
Step by Step Solution
- Step 1: Write the proportion equation
77,708,137.94 : 107,236,675.14 = 42,425,941.94 : x - Step 2: Convert to fraction form
77,708,137.94/107,236,675.14 = 42,425,941.94/x - Step 3: Cross multiply
77,708,137.94x = 107,236,675.14 × 42,425,941.94 - Step 4: Simplify right side
77,708,137.94x = 4,549,616,953,328,281 - Step 5: Solve for x
x = 4,549,616,953,328,281/77,708,137.94 - Step 6: Final answer
x = 58,547,496.75
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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.