Finding the Fourth Proportional to 90,909,483.09, 125,417,946.88 and 67,124,113.95
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Solution
The fourth proportional to 90,909,483.09, 125,417,946.88 and 67,124,113.95 is: 92,603,854.64
Step by Step Solution
- Step 1: Write the proportion equation
90,909,483.09 : 125,417,946.88 = 67,124,113.95 : x - Step 2: Convert to fraction form
90,909,483.09/125,417,946.88 = 67,124,113.95/x - Step 3: Cross multiply
90,909,483.09x = 125,417,946.88 × 67,124,113.95 - Step 4: Simplify right side
90,909,483.09x = 8,418,568,557,748,167 - Step 5: Solve for x
x = 8,418,568,557,748,167/90,909,483.09 - Step 6: Final answer
x = 92,603,854.64
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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.