Home / 75,790.75-113,686.04-20,386.75

Finding the Fourth Proportional to 75,790.75, 113,686.04 and 20,386.75

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Solution

The fourth proportional to 75,790.75, 113,686.04 and 20,386.75 is: 30,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,790.75 : 113,686.04 = 20,386.75 : x
  2. Step 2: Convert to fraction form
    75,790.75/113,686.04 = 20,386.75/x
  3. Step 3: Cross multiply
    75,790.75x = 113,686.04 × 20,386.75
  4. Step 4: Simplify right side
    75,790.75x = 2,317,688,875.97
  5. Step 5: Solve for x
    x = 2,317,688,875.97/75,790.75
  6. Step 6: Final answer
    x = 30,580.10

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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.