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Finding the Fourth Proportional to 93,300.87, 128,750.54 and 53,009.31

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Solution

The fourth proportional to 93,300.87, 128,750.54 and 53,009.31 is: 73,150.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,300.87 : 128,750.54 = 53,009.31 : x
  2. Step 2: Convert to fraction form
    93,300.87/128,750.54 = 53,009.31/x
  3. Step 3: Cross multiply
    93,300.87x = 128,750.54 × 53,009.31
  4. Step 4: Simplify right side
    93,300.87x = 6,824,977,287.53
  5. Step 5: Solve for x
    x = 6,824,977,287.53/93,300.87
  6. Step 6: Final answer
    x = 73,150.20

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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.