Home / 65,701.60-90,642.48-40,507.36

Finding the Fourth Proportional to 65,701.60, 90,642.48 and 40,507.36

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Solution

The fourth proportional to 65,701.60, 90,642.48 and 40,507.36 is: 55,884.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,701.60 : 90,642.48 = 40,507.36 : x
  2. Step 2: Convert to fraction form
    65,701.60/90,642.48 = 40,507.36/x
  3. Step 3: Cross multiply
    65,701.60x = 90,642.48 × 40,507.36
  4. Step 4: Simplify right side
    65,701.60x = 3,671,687,568.65
  5. Step 5: Solve for x
    x = 3,671,687,568.65/65,701.60
  6. Step 6: Final answer
    x = 55,884.29

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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.