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Finding the Fourth Proportional to 93,752.68, 129,381.79 and 51,311.21

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Solution

The fourth proportional to 93,752.68, 129,381.79 and 51,311.21 is: 70,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,752.68 : 129,381.79 = 51,311.21 : x
  2. Step 2: Convert to fraction form
    93,752.68/129,381.79 = 51,311.21/x
  3. Step 3: Cross multiply
    93,752.68x = 129,381.79 × 51,311.21
  4. Step 4: Simplify right side
    93,752.68x = 6,638,736,392.04
  5. Step 5: Solve for x
    x = 6,638,736,392.04/93,752.68
  6. Step 6: Final answer
    x = 70,811.16

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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.