Home / 83,699.28-115,507-45,974.32

Finding the Fourth Proportional to 83,699.28, 115,507 and 45,974.32

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Solution

The fourth proportional to 83,699.28, 115,507 and 45,974.32 is: 63,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,699.28 : 115,507 = 45,974.32 : x
  2. Step 2: Convert to fraction form
    83,699.28/115,507 = 45,974.32/x
  3. Step 3: Cross multiply
    83,699.28x = 115,507 × 45,974.32
  4. Step 4: Simplify right side
    83,699.28x = 5,310,355,780.24
  5. Step 5: Solve for x
    x = 5,310,355,780.24/83,699.28
  6. Step 6: Final answer
    x = 63,445.66

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1.5x scale

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.