Home / 90,679,981.28-125,138,407.82-51,521,809.46

Finding the Fourth Proportional to 90,679,981.28, 125,138,407.82 and 51,521,809.46

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Solution

The fourth proportional to 90,679,981.28, 125,138,407.82 and 51,521,809.46 is: 71,100,116.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,679,981.28 : 125,138,407.82 = 51,521,809.46 : x
  2. Step 2: Convert to fraction form
    90,679,981.28/125,138,407.82 = 51,521,809.46/x
  3. Step 3: Cross multiply
    90,679,981.28x = 125,138,407.82 × 51,521,809.46
  4. Step 4: Simplify right side
    90,679,981.28x = 6,447,357,202,946,513
  5. Step 5: Solve for x
    x = 6,447,357,202,946,513/90,679,981.28
  6. Step 6: Final answer
    x = 71,100,116.17

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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.