Home / 83,974,638.42-115,830,903.55-55,716,399.78

Finding the Fourth Proportional to 83,974,638.42, 115,830,903.55 and 55,716,399.78

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Solution

The fourth proportional to 83,974,638.42, 115,830,903.55 and 55,716,399.78 is: 76,852,738.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,974,638.42 : 115,830,903.55 = 55,716,399.78 : x
  2. Step 2: Convert to fraction form
    83,974,638.42/115,830,903.55 = 55,716,399.78/x
  3. Step 3: Cross multiply
    83,974,638.42x = 115,830,903.55 × 55,716,399.78
  4. Step 4: Simplify right side
    83,974,638.42x = 6,453,680,929,070,421
  5. Step 5: Solve for x
    x = 6,453,680,929,070,421/83,974,638.42
  6. Step 6: Final answer
    x = 76,852,738.52

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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.