Home / 64,528.47-89,081.66-40,342.87

Finding the Fourth Proportional to 64,528.47, 89,081.66 and 40,342.87

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Solution

The fourth proportional to 64,528.47, 89,081.66 and 40,342.87 is: 55,693.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,528.47 : 89,081.66 = 40,342.87 : x
  2. Step 2: Convert to fraction form
    64,528.47/89,081.66 = 40,342.87/x
  3. Step 3: Cross multiply
    64,528.47x = 89,081.66 × 40,342.87
  4. Step 4: Simplify right side
    64,528.47x = 3,593,810,040.97
  5. Step 5: Solve for x
    x = 3,593,810,040.97/64,528.47
  6. Step 6: Final answer
    x = 55,693.40

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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.