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Finding the Fourth Proportional to 93,159.60, 128,553 and 50,717.28

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Solution

The fourth proportional to 93,159.60, 128,553 and 50,717.28 is: 69,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,159.60 : 128,553 = 50,717.28 : x
  2. Step 2: Convert to fraction form
    93,159.60/128,553 = 50,717.28/x
  3. Step 3: Cross multiply
    93,159.60x = 128,553 × 50,717.28
  4. Step 4: Simplify right side
    93,159.60x = 6,519,858,495.84
  5. Step 5: Solve for x
    x = 6,519,858,495.84/93,159.60
  6. Step 6: Final answer
    x = 69,985.90

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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.