Home / 64,340.15-88,678.51-42,791.36

Finding the Fourth Proportional to 64,340.15, 88,678.51 and 42,791.36

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Solution

The fourth proportional to 64,340.15, 88,678.51 and 42,791.36 is: 58,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,340.15 : 88,678.51 = 42,791.36 : x
  2. Step 2: Convert to fraction form
    64,340.15/88,678.51 = 42,791.36/x
  3. Step 3: Cross multiply
    64,340.15x = 88,678.51 × 42,791.36
  4. Step 4: Simplify right side
    64,340.15x = 3,794,673,495.30
  5. Step 5: Solve for x
    x = 3,794,673,495.30/64,340.15
  6. Step 6: Final answer
    x = 58,978.32

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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.