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Finding the Third Proportional to 78,720,480 and 108,514,629

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Solution

The third proportional to 78,720,480 and 108,514,629 is: 149,585,275.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,720,480 : 108,514,629 = 108,514,629 : x
  2. Step 2: Convert to fraction form
    78,720,480/108,514,629 = 108,514,629/x
  3. Step 3: Cross multiply
    78,720,480x = 108,514,629 × 108,514,629
  4. Step 4: Simplify right side
    78,720,480x = 11,775,424,707,007,640
  5. Step 5: Solve for x
    x = 11,775,424,707,007,640/78,720,480
  6. Step 6: Final answer
    x = 149,585,275.74

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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.