Home / 65,714.09-90,685.36-35,499.40

Finding the Fourth Proportional to 65,714.09, 90,685.36 and 35,499.40

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Solution

The fourth proportional to 65,714.09, 90,685.36 and 35,499.40 is: 48,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,714.09 : 90,685.36 = 35,499.40 : x
  2. Step 2: Convert to fraction form
    65,714.09/90,685.36 = 35,499.40/x
  3. Step 3: Cross multiply
    65,714.09x = 90,685.36 × 35,499.40
  4. Step 4: Simplify right side
    65,714.09x = 3,219,275,868.78
  5. Step 5: Solve for x
    x = 3,219,275,868.78/65,714.09
  6. Step 6: Final answer
    x = 48,989.13

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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.