Finding the Fourth Proportional to 38,420,688.59, 53,020,970.91 and 21,017,033.99
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Solution
The fourth proportional to 38,420,688.59, 53,020,970.91 and 21,017,033.99 is: 29,003,737.01
Step by Step Solution
- Step 1: Write the proportion equation
38,420,688.59 : 53,020,970.91 = 21,017,033.99 : x - Step 2: Convert to fraction form
38,420,688.59/53,020,970.91 = 21,017,033.99/x - Step 3: Cross multiply
38,420,688.59x = 53,020,970.91 × 21,017,033.99 - Step 4: Simplify right side
38,420,688.59x = 1,114,343,547,533,166.25 - Step 5: Solve for x
x = 1,114,343,547,533,166.25/38,420,688.59 - Step 6: Final answer
x = 29,003,737.01
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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.