Home / 65,483.20-90,377.76-38,632.36

Finding the Fourth Proportional to 65,483.20, 90,377.76 and 38,632.36

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Solution

The fourth proportional to 65,483.20, 90,377.76 and 38,632.36 is: 53,319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,483.20 : 90,377.76 = 38,632.36 : x
  2. Step 2: Convert to fraction form
    65,483.20/90,377.76 = 38,632.36/x
  3. Step 3: Cross multiply
    65,483.20x = 90,377.76 × 38,632.36
  4. Step 4: Simplify right side
    65,483.20x = 3,491,506,160.31
  5. Step 5: Solve for x
    x = 3,491,506,160.31/65,483.20
  6. Step 6: Final answer
    x = 53,319.11

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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.