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Finding the Fourth Proportional to 93,461.35, 128,976.60 and 51,019.87

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Solution

The fourth proportional to 93,461.35, 128,976.60 and 51,019.87 is: 70,407.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,461.35 : 128,976.60 = 51,019.87 : x
  2. Step 2: Convert to fraction form
    93,461.35/128,976.60 = 51,019.87/x
  3. Step 3: Cross multiply
    93,461.35x = 128,976.60 × 51,019.87
  4. Step 4: Simplify right side
    93,461.35x = 6,580,368,720.16
  5. Step 5: Solve for x
    x = 6,580,368,720.16/93,461.35
  6. Step 6: Final answer
    x = 70,407.38

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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.