Home / 60,646.20-90,969.30-31,121.70

Finding the Fourth Proportional to 60,646.20, 90,969.30 and 31,121.70

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Solution

The fourth proportional to 60,646.20, 90,969.30 and 31,121.70 is: 46,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,646.20 : 90,969.30 = 31,121.70 : x
  2. Step 2: Convert to fraction form
    60,646.20/90,969.30 = 31,121.70/x
  3. Step 3: Cross multiply
    60,646.20x = 90,969.30 × 31,121.70
  4. Step 4: Simplify right side
    60,646.20x = 2,831,119,263.81
  5. Step 5: Solve for x
    x = 2,831,119,263.81/60,646.20
  6. Step 6: Final answer
    x = 46,682.55

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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.