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Finding the Fourth Proportional to 93,750.48, 129,378.96 and 51,309

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Solution

The fourth proportional to 93,750.48, 129,378.96 and 51,309 is: 70,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,750.48 : 129,378.96 = 51,309 : x
  2. Step 2: Convert to fraction form
    93,750.48/129,378.96 = 51,309/x
  3. Step 3: Cross multiply
    93,750.48x = 129,378.96 × 51,309
  4. Step 4: Simplify right side
    93,750.48x = 6,638,305,058.64
  5. Step 5: Solve for x
    x = 6,638,305,058.64/93,750.48
  6. Step 6: Final answer
    x = 70,808.22

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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.