Home / 81,015.10-121,522.65-49,522.30

Finding the Fourth Proportional to 81,015.10, 121,522.65 and 49,522.30

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Solution

The fourth proportional to 81,015.10, 121,522.65 and 49,522.30 is: 74,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,015.10 : 121,522.65 = 49,522.30 : x
  2. Step 2: Convert to fraction form
    81,015.10/121,522.65 = 49,522.30/x
  3. Step 3: Cross multiply
    81,015.10x = 121,522.65 × 49,522.30
  4. Step 4: Simplify right side
    81,015.10x = 6,018,081,130.10
  5. Step 5: Solve for x
    x = 6,018,081,130.10/81,015.10
  6. Step 6: Final answer
    x = 74,283.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.