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Finding the Fourth Proportional to 65,860.76, 90,887.75 and 35,646.06

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Solution

The fourth proportional to 65,860.76, 90,887.75 and 35,646.06 is: 49,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,860.76 : 90,887.75 = 35,646.06 : x
  2. Step 2: Convert to fraction form
    65,860.76/90,887.75 = 35,646.06/x
  3. Step 3: Cross multiply
    65,860.76x = 90,887.75 × 35,646.06
  4. Step 4: Simplify right side
    65,860.76x = 3,239,790,486.04
  5. Step 5: Solve for x
    x = 3,239,790,486.04/65,860.76
  6. Step 6: Final answer
    x = 49,191.51

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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.