Finding the Fourth Proportional to 57,970,877.91, 79,999,339.95 and 31,865,118.18
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Solution
The fourth proportional to 57,970,877.91, 79,999,339.95 and 31,865,118.18 is: 43,973,603.88
Step by Step Solution
- Step 1: Write the proportion equation
57,970,877.91 : 79,999,339.95 = 31,865,118.18 : x - Step 2: Convert to fraction form
57,970,877.91/79,999,339.95 = 31,865,118.18/x - Step 3: Cross multiply
57,970,877.91x = 79,999,339.95 × 31,865,118.18 - Step 4: Simplify right side
57,970,877.91x = 2,549,188,421,828,745.50 - Step 5: Solve for x
x = 2,549,188,421,828,745.50/57,970,877.91 - Step 6: Final answer
x = 43,973,603.88
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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.