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Finding the Fourth Proportional to 78,646.56, 108,569.40 and 50,368.56

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Solution

The fourth proportional to 78,646.56, 108,569.40 and 50,368.56 is: 69,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,646.56 : 108,569.40 = 50,368.56 : x
  2. Step 2: Convert to fraction form
    78,646.56/108,569.40 = 50,368.56/x
  3. Step 3: Cross multiply
    78,646.56x = 108,569.40 × 50,368.56
  4. Step 4: Simplify right side
    78,646.56x = 5,468,484,338.06
  5. Step 5: Solve for x
    x = 5,468,484,338.06/78,646.56
  6. Step 6: Final answer
    x = 69,532.40

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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.