Home / 65,987.15-91,060.05-39,113.70

Finding the Fourth Proportional to 65,987.15, 91,060.05 and 39,113.70

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Solution

The fourth proportional to 65,987.15, 91,060.05 and 39,113.70 is: 53,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,987.15 : 91,060.05 = 39,113.70 : x
  2. Step 2: Convert to fraction form
    65,987.15/91,060.05 = 39,113.70/x
  3. Step 3: Cross multiply
    65,987.15x = 91,060.05 × 39,113.70
  4. Step 4: Simplify right side
    65,987.15x = 3,561,695,477.69
  5. Step 5: Solve for x
    x = 3,561,695,477.69/65,987.15
  6. Step 6: Final answer
    x = 53,975.60

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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.