Finding the Fourth Proportional to 70,656,931.40, 97,516,891.86 and 39,719,648.84
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Solution
The fourth proportional to 70,656,931.40, 97,516,891.86 and 39,719,648.84 is: 54,818,920.44
Step by Step Solution
- Step 1: Write the proportion equation
70,656,931.40 : 97,516,891.86 = 39,719,648.84 : x - Step 2: Convert to fraction form
70,656,931.40/97,516,891.86 = 39,719,648.84/x - Step 3: Cross multiply
70,656,931.40x = 97,516,891.86 × 39,719,648.84 - Step 4: Simplify right side
70,656,931.40x = 3,873,336,700,647,455 - Step 5: Solve for x
x = 3,873,336,700,647,455/70,656,931.40 - Step 6: Final answer
x = 54,818,920.44
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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.