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Finding the Fourth Proportional to 93,419.31, 128,921.39 and 50,980.58

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Solution

The fourth proportional to 93,419.31, 128,921.39 and 50,980.58 is: 70,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419.31 : 128,921.39 = 50,980.58 : x
  2. Step 2: Convert to fraction form
    93,419.31/128,921.39 = 50,980.58/x
  3. Step 3: Cross multiply
    93,419.31x = 128,921.39 × 50,980.58
  4. Step 4: Simplify right side
    93,419.31x = 6,572,487,236.61
  5. Step 5: Solve for x
    x = 6,572,487,236.61/93,419.31
  6. Step 6: Final answer
    x = 70,354.70

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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.