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Finding the Fourth Proportional to 78,392.02, 117,628.24 and 38,410.24

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Solution

The fourth proportional to 78,392.02, 117,628.24 and 38,410.24 is: 57,635.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392.02 : 117,628.24 = 38,410.24 : x
  2. Step 2: Convert to fraction form
    78,392.02/117,628.24 = 38,410.24/x
  3. Step 3: Cross multiply
    78,392.02x = 117,628.24 × 38,410.24
  4. Step 4: Simplify right side
    78,392.02x = 4,518,128,929.18
  5. Step 5: Solve for x
    x = 4,518,128,929.18/78,392.02
  6. Step 6: Final answer
    x = 57,635.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.