Home / 75,278.07-103,623-65,064.45

Finding the Fourth Proportional to 75,278.07, 103,623 and 65,064.45

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Solution

The fourth proportional to 75,278.07, 103,623 and 65,064.45 is: 89,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,278.07 : 103,623 = 65,064.45 : x
  2. Step 2: Convert to fraction form
    75,278.07/103,623 = 65,064.45/x
  3. Step 3: Cross multiply
    75,278.07x = 103,623 × 65,064.45
  4. Step 4: Simplify right side
    75,278.07x = 6,742,173,502.35
  5. Step 5: Solve for x
    x = 6,742,173,502.35/75,278.07
  6. Step 6: Final answer
    x = 89,563.58

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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.