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Finding the Fourth Proportional to 93,753.80, 129,381 and 51,312.68

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Solution

The fourth proportional to 93,753.80, 129,381 and 51,312.68 is: 70,811.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,753.80 : 129,381 = 51,312.68 : x
  2. Step 2: Convert to fraction form
    93,753.80/129,381 = 51,312.68/x
  3. Step 3: Cross multiply
    93,753.80x = 129,381 × 51,312.68
  4. Step 4: Simplify right side
    93,753.80x = 6,638,885,851.08
  5. Step 5: Solve for x
    x = 6,638,885,851.08/93,753.80
  6. Step 6: Final answer
    x = 70,811.91

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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.