Home / 42,720.37-64,078.62-14,642.92

Finding the Fourth Proportional to 42,720.37, 64,078.62 and 14,642.92

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Solution

The fourth proportional to 42,720.37, 64,078.62 and 14,642.92 is: 21,963.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,720.37 : 64,078.62 = 14,642.92 : x
  2. Step 2: Convert to fraction form
    42,720.37/64,078.62 = 14,642.92/x
  3. Step 3: Cross multiply
    42,720.37x = 64,078.62 × 14,642.92
  4. Step 4: Simplify right side
    42,720.37x = 938,298,106.37
  5. Step 5: Solve for x
    x = 938,298,106.37/42,720.37
  6. Step 6: Final answer
    x = 21,963.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.