Home / 66,387.17-91,614.69-39,530.81

Finding the Fourth Proportional to 66,387.17, 91,614.69 and 39,530.81

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Solution

The fourth proportional to 66,387.17, 91,614.69 and 39,530.81 is: 54,552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,387.17 : 91,614.69 = 39,530.81 : x
  2. Step 2: Convert to fraction form
    66,387.17/91,614.69 = 39,530.81/x
  3. Step 3: Cross multiply
    66,387.17x = 91,614.69 × 39,530.81
  4. Step 4: Simplify right side
    66,387.17x = 3,621,602,445.53
  5. Step 5: Solve for x
    x = 3,621,602,445.53/66,387.17
  6. Step 6: Final answer
    x = 54,552.75

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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.