Home / 67,645.60-93,328.32-39,345.28

Finding the Fourth Proportional to 67,645.60, 93,328.32 and 39,345.28

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Solution

The fourth proportional to 67,645.60, 93,328.32 and 39,345.28 is: 54,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,645.60 : 93,328.32 = 39,345.28 : x
  2. Step 2: Convert to fraction form
    67,645.60/93,328.32 = 39,345.28/x
  3. Step 3: Cross multiply
    67,645.60x = 93,328.32 × 39,345.28
  4. Step 4: Simplify right side
    67,645.60x = 3,672,028,882.33
  5. Step 5: Solve for x
    x = 3,672,028,882.33/67,645.60
  6. Step 6: Final answer
    x = 54,283.34

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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.