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Finding the Fourth Proportional to 78,483.54, 108,304.30 and 42,673.58

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Solution

The fourth proportional to 78,483.54, 108,304.30 and 42,673.58 is: 58,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,483.54 : 108,304.30 = 42,673.58 : x
  2. Step 2: Convert to fraction form
    78,483.54/108,304.30 = 42,673.58/x
  3. Step 3: Cross multiply
    78,483.54x = 108,304.30 × 42,673.58
  4. Step 4: Simplify right side
    78,483.54x = 4,621,732,210.39
  5. Step 5: Solve for x
    x = 4,621,732,210.39/78,483.54
  6. Step 6: Final answer
    x = 58,887.92

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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.