Home / 81,167.64-121,751.46-39,579

Finding the Fourth Proportional to 81,167.64, 121,751.46 and 39,579

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Solution

The fourth proportional to 81,167.64, 121,751.46 and 39,579 is: 59,368.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,167.64 : 121,751.46 = 39,579 : x
  2. Step 2: Convert to fraction form
    81,167.64/121,751.46 = 39,579/x
  3. Step 3: Cross multiply
    81,167.64x = 121,751.46 × 39,579
  4. Step 4: Simplify right side
    81,167.64x = 4,818,801,035.34
  5. Step 5: Solve for x
    x = 4,818,801,035.34/81,167.64
  6. Step 6: Final answer
    x = 59,368.50

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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.