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Finding the Fourth Proportional to 93,444.57, 128,970.23 and 55,721.25

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Solution

The fourth proportional to 93,444.57, 128,970.23 and 55,721.25 is: 76,905.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,444.57 : 128,970.23 = 55,721.25 : x
  2. Step 2: Convert to fraction form
    93,444.57/128,970.23 = 55,721.25/x
  3. Step 3: Cross multiply
    93,444.57x = 128,970.23 × 55,721.25
  4. Step 4: Simplify right side
    93,444.57x = 7,186,382,149.78
  5. Step 5: Solve for x
    x = 7,186,382,149.78/93,444.57
  6. Step 6: Final answer
    x = 76,905.29

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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.