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Finding the Fourth Proportional to 93,429.60, 128,934.72 and 50,989.92

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Solution

The fourth proportional to 93,429.60, 128,934.72 and 50,989.92 is: 70,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,429.60 : 128,934.72 = 50,989.92 : x
  2. Step 2: Convert to fraction form
    93,429.60/128,934.72 = 50,989.92/x
  3. Step 3: Cross multiply
    93,429.60x = 128,934.72 × 50,989.92
  4. Step 4: Simplify right side
    93,429.60x = 6,574,371,058.02
  5. Step 5: Solve for x
    x = 6,574,371,058.02/93,429.60
  6. Step 6: Final answer
    x = 70,367.11

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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.