Home / 65,767.68-90,752.40-38,911.32

Finding the Fourth Proportional to 65,767.68, 90,752.40 and 38,911.32

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Solution

The fourth proportional to 65,767.68, 90,752.40 and 38,911.32 is: 53,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,767.68 : 90,752.40 = 38,911.32 : x
  2. Step 2: Convert to fraction form
    65,767.68/90,752.40 = 38,911.32/x
  3. Step 3: Cross multiply
    65,767.68x = 90,752.40 × 38,911.32
  4. Step 4: Simplify right side
    65,767.68x = 3,531,295,677.17
  5. Step 5: Solve for x
    x = 3,531,295,677.17/65,767.68
  6. Step 6: Final answer
    x = 53,693.48

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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.