Home / 81,399.51-112,332.16-45,102.06

Finding the Fourth Proportional to 81,399.51, 112,332.16 and 45,102.06

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Solution

The fourth proportional to 81,399.51, 112,332.16 and 45,102.06 is: 62,241.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399.51 : 112,332.16 = 45,102.06 : x
  2. Step 2: Convert to fraction form
    81,399.51/112,332.16 = 45,102.06/x
  3. Step 3: Cross multiply
    81,399.51x = 112,332.16 × 45,102.06
  4. Step 4: Simplify right side
    81,399.51x = 5,066,411,820.25
  5. Step 5: Solve for x
    x = 5,066,411,820.25/81,399.51
  6. Step 6: Final answer
    x = 62,241.31

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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.