Home / 88,028.58-121,320.81-64,117.38

Finding the Fourth Proportional to 88,028.58, 121,320.81 and 64,117.38

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Solution

The fourth proportional to 88,028.58, 121,320.81 and 64,117.38 is: 88,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,028.58 : 121,320.81 = 64,117.38 : x
  2. Step 2: Convert to fraction form
    88,028.58/121,320.81 = 64,117.38/x
  3. Step 3: Cross multiply
    88,028.58x = 121,320.81 × 64,117.38
  4. Step 4: Simplify right side
    88,028.58x = 7,778,772,476.68
  5. Step 5: Solve for x
    x = 7,778,772,476.68/88,028.58
  6. Step 6: Final answer
    x = 88,366.44

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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.