Home / 81,240.38-112,114.78-45,430.32

Finding the Fourth Proportional to 81,240.38, 112,114.78 and 45,430.32

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Solution

The fourth proportional to 81,240.38, 112,114.78 and 45,430.32 is: 62,695.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.38 : 112,114.78 = 45,430.32 : x
  2. Step 2: Convert to fraction form
    81,240.38/112,114.78 = 45,430.32/x
  3. Step 3: Cross multiply
    81,240.38x = 112,114.78 × 45,430.32
  4. Step 4: Simplify right side
    81,240.38x = 5,093,410,332.13
  5. Step 5: Solve for x
    x = 5,093,410,332.13/81,240.38
  6. Step 6: Final answer
    x = 62,695.55

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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.