Finding the Fourth Proportional to 42,921,430.12, 59,201,592.42 and 29,146,479.40
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Solution
The fourth proportional to 42,921,430.12, 59,201,592.42 and 29,146,479.40 is: 40,201,782.40
Step by Step Solution
- Step 1: Write the proportion equation
42,921,430.12 : 59,201,592.42 = 29,146,479.40 : x - Step 2: Convert to fraction form
42,921,430.12/59,201,592.42 = 29,146,479.40/x - Step 3: Cross multiply
42,921,430.12x = 59,201,592.42 × 29,146,479.40 - Step 4: Simplify right side
42,921,430.12x = 1,725,517,993,916,726 - Step 5: Solve for x
x = 1,725,517,993,916,726/42,921,430.12 - Step 6: Final answer
x = 40,201,782.40
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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.