Home / 87,720.56-121,054.28-47,434.22

Finding the Fourth Proportional to 87,720.56, 121,054.28 and 47,434.22

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Solution

The fourth proportional to 87,720.56, 121,054.28 and 47,434.22 is: 65,459.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.56 : 121,054.28 = 47,434.22 : x
  2. Step 2: Convert to fraction form
    87,720.56/121,054.28 = 47,434.22/x
  3. Step 3: Cross multiply
    87,720.56x = 121,054.28 × 47,434.22
  4. Step 4: Simplify right side
    87,720.56x = 5,742,115,349.46
  5. Step 5: Solve for x
    x = 5,742,115,349.46/87,720.56
  6. Step 6: Final answer
    x = 65,459.17

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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.