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Finding the Fourth Proportional to 93,290.90, 128,744.89 and 53,011.51

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Solution

The fourth proportional to 93,290.90, 128,744.89 and 53,011.51 is: 73,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,290.90 : 128,744.89 = 53,011.51 : x
  2. Step 2: Convert to fraction form
    93,290.90/128,744.89 = 53,011.51/x
  3. Step 3: Cross multiply
    93,290.90x = 128,744.89 × 53,011.51
  4. Step 4: Simplify right side
    93,290.90x = 6,824,960,569.29
  5. Step 5: Solve for x
    x = 6,824,960,569.29/93,290.90
  6. Step 6: Final answer
    x = 73,157.84

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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.