Home / 65,741.04-90,720.36-38,877.84

Finding the Fourth Proportional to 65,741.04, 90,720.36 and 38,877.84

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Solution

The fourth proportional to 65,741.04, 90,720.36 and 38,877.84 is: 53,650.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,741.04 : 90,720.36 = 38,877.84 : x
  2. Step 2: Convert to fraction form
    65,741.04/90,720.36 = 38,877.84/x
  3. Step 3: Cross multiply
    65,741.04x = 90,720.36 × 38,877.84
  4. Step 4: Simplify right side
    65,741.04x = 3,527,011,640.82
  5. Step 5: Solve for x
    x = 3,527,011,640.82/65,741.04
  6. Step 6: Final answer
    x = 53,650.07

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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.