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Finding the Fourth Proportional to 93,679.26, 129,119.88 and 71,011

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Solution

The fourth proportional to 93,679.26, 129,119.88 and 71,011 is: 97,875.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,679.26 : 129,119.88 = 71,011 : x
  2. Step 2: Convert to fraction form
    93,679.26/129,119.88 = 71,011/x
  3. Step 3: Cross multiply
    93,679.26x = 129,119.88 × 71,011
  4. Step 4: Simplify right side
    93,679.26x = 9,168,931,798.68
  5. Step 5: Solve for x
    x = 9,168,931,798.68/93,679.26
  6. Step 6: Final answer
    x = 97,875.79

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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.