Home / 65,357.02-90,212.01-38,508.20

Finding the Fourth Proportional to 65,357.02, 90,212.01 and 38,508.20

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Solution

The fourth proportional to 65,357.02, 90,212.01 and 38,508.20 is: 53,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,357.02 : 90,212.01 = 38,508.20 : x
  2. Step 2: Convert to fraction form
    65,357.02/90,212.01 = 38,508.20/x
  3. Step 3: Cross multiply
    65,357.02x = 90,212.01 × 38,508.20
  4. Step 4: Simplify right side
    65,357.02x = 3,473,901,930.94
  5. Step 5: Solve for x
    x = 3,473,901,930.94/65,357.02
  6. Step 6: Final answer
    x = 53,152.70

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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.