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Finding the Fourth Proportional to 93,411.60, 128,909.88 and 50,971.92

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Solution

The fourth proportional to 93,411.60, 128,909.88 and 50,971.92 is: 70,342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,411.60 : 128,909.88 = 50,971.92 : x
  2. Step 2: Convert to fraction form
    93,411.60/128,909.88 = 50,971.92/x
  3. Step 3: Cross multiply
    93,411.60x = 128,909.88 × 50,971.92
  4. Step 4: Simplify right side
    93,411.60x = 6,570,784,090.57
  5. Step 5: Solve for x
    x = 6,570,784,090.57/93,411.60
  6. Step 6: Final answer
    x = 70,342.27

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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.