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Finding the Fourth Proportional to 93,753.88, 129,380.40 and 51,312.64

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Solution

The fourth proportional to 93,753.88, 129,380.40 and 51,312.64 is: 70,811.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,753.88 : 129,380.40 = 51,312.64 : x
  2. Step 2: Convert to fraction form
    93,753.88/129,380.40 = 51,312.64/x
  3. Step 3: Cross multiply
    93,753.88x = 129,380.40 × 51,312.64
  4. Step 4: Simplify right side
    93,753.88x = 6,638,849,888.26
  5. Step 5: Solve for x
    x = 6,638,849,888.26/93,753.88
  6. Step 6: Final answer
    x = 70,811.47

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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.