Finding the Fourth Proportional to 39,966,703,862.68, 55,154,116,059.78 and 21,899,349,358.12
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Solution
The fourth proportional to 39,966,703,862.68, 55,154,116,059.78 and 21,899,349,358.12 is: 30,221,137,581.96
Step by Step Solution
- Step 1: Write the proportion equation
39,966,703,862.68 : 55,154,116,059.78 = 21,899,349,358.12 : x - Step 2: Convert to fraction form
39,966,703,862.68/55,154,116,059.78 = 21,899,349,358.12/x - Step 3: Cross multiply
39,966,703,862.68x = 55,154,116,059.78 × 21,899,349,358.12 - Step 4: Simplify right side
39,966,703,862.68x = 1,207,839,256,131,418,980,352 - Step 5: Solve for x
x = 1,207,839,256,131,418,980,352/39,966,703,862.68 - Step 6: Final answer
x = 30,221,137,581.96
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1.5x scale
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.