Home / 81,685,979.49-112,729,014.05-45,018,912.45

Finding the Fourth Proportional to 81,685,979.49, 112,729,014.05 and 45,018,912.45

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Solution

The fourth proportional to 81,685,979.49, 112,729,014.05 and 45,018,912.45 is: 62,127,401.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685,979.49 : 112,729,014.05 = 45,018,912.45 : x
  2. Step 2: Convert to fraction form
    81,685,979.49/112,729,014.05 = 45,018,912.45/x
  3. Step 3: Cross multiply
    81,685,979.49x = 112,729,014.05 × 45,018,912.45
  4. Step 4: Simplify right side
    81,685,979.49x = 5,074,937,613,866,676
  5. Step 5: Solve for x
    x = 5,074,937,613,866,676/81,685,979.49
  6. Step 6: Final answer
    x = 62,127,401.12

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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.