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Finding the Fourth Proportional to 93,430.64, 128,932.48 and 50,989.48

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Solution

The fourth proportional to 93,430.64, 128,932.48 and 50,989.48 is: 70,364.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,430.64 : 128,932.48 = 50,989.48 : x
  2. Step 2: Convert to fraction form
    93,430.64/128,932.48 = 50,989.48/x
  3. Step 3: Cross multiply
    93,430.64x = 128,932.48 × 50,989.48
  4. Step 4: Simplify right side
    93,430.64x = 6,574,200,110.31
  5. Step 5: Solve for x
    x = 6,574,200,110.31/93,430.64
  6. Step 6: Final answer
    x = 70,364.50

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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.