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Finding the Fourth Proportional to 93,390.76, 128,874 and 53,114.32

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Solution

The fourth proportional to 93,390.76, 128,874 and 53,114.32 is: 73,294.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,390.76 : 128,874 = 53,114.32 : x
  2. Step 2: Convert to fraction form
    93,390.76/128,874 = 53,114.32/x
  3. Step 3: Cross multiply
    93,390.76x = 128,874 × 53,114.32
  4. Step 4: Simplify right side
    93,390.76x = 6,845,054,875.68
  5. Step 5: Solve for x
    x = 6,845,054,875.68/93,390.76
  6. Step 6: Final answer
    x = 73,294.78

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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.