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Finding the Fourth Proportional to 93,130.70, 128,520.68 and 50,689.13

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Solution

The fourth proportional to 93,130.70, 128,520.68 and 50,689.13 is: 69,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,130.70 : 128,520.68 = 50,689.13 : x
  2. Step 2: Convert to fraction form
    93,130.70/128,520.68 = 50,689.13/x
  3. Step 3: Cross multiply
    93,130.70x = 128,520.68 × 50,689.13
  4. Step 4: Simplify right side
    93,130.70x = 6,514,600,560.16
  5. Step 5: Solve for x
    x = 6,514,600,560.16/93,130.70
  6. Step 6: Final answer
    x = 69,951.16

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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.