Home / 65,470.50-90,345.04-38,606.85

Finding the Fourth Proportional to 65,470.50, 90,345.04 and 38,606.85

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Solution

The fourth proportional to 65,470.50, 90,345.04 and 38,606.85 is: 53,274.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,470.50 : 90,345.04 = 38,606.85 : x
  2. Step 2: Convert to fraction form
    65,470.50/90,345.04 = 38,606.85/x
  3. Step 3: Cross multiply
    65,470.50x = 90,345.04 × 38,606.85
  4. Step 4: Simplify right side
    65,470.50x = 3,487,937,311.01
  5. Step 5: Solve for x
    x = 3,487,937,311.01/65,470.50
  6. Step 6: Final answer
    x = 53,274.95

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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.