Home / 93,171.18-128,577.15-53,419.50

Finding the Fourth Proportional to 93,171.18, 128,577.15 and 53,419.50

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Solution

The fourth proportional to 93,171.18, 128,577.15 and 53,419.50 is: 73,719.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,171.18 : 128,577.15 = 53,419.50 : x
  2. Step 2: Convert to fraction form
    93,171.18/128,577.15 = 53,419.50/x
  3. Step 3: Cross multiply
    93,171.18x = 128,577.15 × 53,419.50
  4. Step 4: Simplify right side
    93,171.18x = 6,868,527,064.43
  5. Step 5: Solve for x
    x = 6,868,527,064.43/93,171.18
  6. Step 6: Final answer
    x = 73,719.44

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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.