Home / 90,640,239.16-125,083,547.96-49,387,131.40

Finding the Fourth Proportional to 90,640,239.16, 125,083,547.96 and 49,387,131.40

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Solution

The fourth proportional to 90,640,239.16, 125,083,547.96 and 49,387,131.40 is: 68,154,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640,239.16 : 125,083,547.96 = 49,387,131.40 : x
  2. Step 2: Convert to fraction form
    90,640,239.16/125,083,547.96 = 49,387,131.40/x
  3. Step 3: Cross multiply
    90,640,239.16x = 125,083,547.96 × 49,387,131.40
  4. Step 4: Simplify right side
    90,640,239.16x = 6,177,517,619,078,721
  5. Step 5: Solve for x
    x = 6,177,517,619,078,721/90,640,239.16
  6. Step 6: Final answer
    x = 68,154,251.10

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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.