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Finding the Fourth Proportional to 93,312.76, 128,770.40 and 50,871.20

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Solution

The fourth proportional to 93,312.76, 128,770.40 and 50,871.20 is: 70,201.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.76 : 128,770.40 = 50,871.20 : x
  2. Step 2: Convert to fraction form
    93,312.76/128,770.40 = 50,871.20/x
  3. Step 3: Cross multiply
    93,312.76x = 128,770.40 × 50,871.20
  4. Step 4: Simplify right side
    93,312.76x = 6,550,704,772.48
  5. Step 5: Solve for x
    x = 6,550,704,772.48/93,312.76
  6. Step 6: Final answer
    x = 70,201.60

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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.