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Finding the Fourth Proportional to 88,099.40, 121,578.08 and 47,813.51

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Solution

The fourth proportional to 88,099.40, 121,578.08 and 47,813.51 is: 65,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,099.40 : 121,578.08 = 47,813.51 : x
  2. Step 2: Convert to fraction form
    88,099.40/121,578.08 = 47,813.51/x
  3. Step 3: Cross multiply
    88,099.40x = 121,578.08 × 47,813.51
  4. Step 4: Simplify right side
    88,099.40x = 5,813,074,743.86
  5. Step 5: Solve for x
    x = 5,813,074,743.86/88,099.40
  6. Step 6: Final answer
    x = 65,983.14

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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.