Home / 81,398.64-112,332.60-45,588.56

Finding the Fourth Proportional to 81,398.64, 112,332.60 and 45,588.56

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Solution

The fourth proportional to 81,398.64, 112,332.60 and 45,588.56 is: 62,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.64 : 112,332.60 = 45,588.56 : x
  2. Step 2: Convert to fraction form
    81,398.64/112,332.60 = 45,588.56/x
  3. Step 3: Cross multiply
    81,398.64x = 112,332.60 × 45,588.56
  4. Step 4: Simplify right side
    81,398.64x = 5,121,081,475.06
  5. Step 5: Solve for x
    x = 5,121,081,475.06/81,398.64
  6. Step 6: Final answer
    x = 62,913.60

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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.