Home / 81,154.17-111,985.47-45,339.21

Finding the Fourth Proportional to 81,154.17, 111,985.47 and 45,339.21

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Solution

The fourth proportional to 81,154.17, 111,985.47 and 45,339.21 is: 62,564.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,154.17 : 111,985.47 = 45,339.21 : x
  2. Step 2: Convert to fraction form
    81,154.17/111,985.47 = 45,339.21/x
  3. Step 3: Cross multiply
    81,154.17x = 111,985.47 × 45,339.21
  4. Step 4: Simplify right side
    81,154.17x = 5,077,332,741.28
  5. Step 5: Solve for x
    x = 5,077,332,741.28/81,154.17
  6. Step 6: Final answer
    x = 62,564.04

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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.