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Finding the Fourth Proportional to 93,039.98, 128,424.42 and 52,780.51

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Solution

The fourth proportional to 93,039.98, 128,424.42 and 52,780.51 is: 72,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,039.98 : 128,424.42 = 52,780.51 : x
  2. Step 2: Convert to fraction form
    93,039.98/128,424.42 = 52,780.51/x
  3. Step 3: Cross multiply
    93,039.98x = 128,424.42 × 52,780.51
  4. Step 4: Simplify right side
    93,039.98x = 6,778,305,478.03
  5. Step 5: Solve for x
    x = 6,778,305,478.03/93,039.98
  6. Step 6: Final answer
    x = 72,853.69

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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.