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Finding the Fourth Proportional to 93,461.34, 128,976.60 and 51,019.86

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Solution

The fourth proportional to 93,461.34, 128,976.60 and 51,019.86 is: 70,407.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,461.34 : 128,976.60 = 51,019.86 : x
  2. Step 2: Convert to fraction form
    93,461.34/128,976.60 = 51,019.86/x
  3. Step 3: Cross multiply
    93,461.34x = 128,976.60 × 51,019.86
  4. Step 4: Simplify right side
    93,461.34x = 6,580,368,075.28
  5. Step 5: Solve for x
    x = 6,580,368,075.28/93,461.34
  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.