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Finding the Fourth Proportional to 93,445.76, 128,953.14 and 51,005

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Solution

The fourth proportional to 93,445.76, 128,953.14 and 51,005 is: 70,385.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,445.76 : 128,953.14 = 51,005 : x
  2. Step 2: Convert to fraction form
    93,445.76/128,953.14 = 51,005/x
  3. Step 3: Cross multiply
    93,445.76x = 128,953.14 × 51,005
  4. Step 4: Simplify right side
    93,445.76x = 6,577,254,905.70
  5. Step 5: Solve for x
    x = 6,577,254,905.70/93,445.76
  6. Step 6: Final answer
    x = 70,385.80

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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.