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Finding the Fourth Proportional to 93,412.62, 128,913.06 and 53,130.06

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Solution

The fourth proportional to 93,412.62, 128,913.06 and 53,130.06 is: 73,321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.62 : 128,913.06 = 53,130.06 : x
  2. Step 2: Convert to fraction form
    93,412.62/128,913.06 = 53,130.06/x
  3. Step 3: Cross multiply
    93,412.62x = 128,913.06 × 53,130.06
  4. Step 4: Simplify right side
    93,412.62x = 6,849,158,612.58
  5. Step 5: Solve for x
    x = 6,849,158,612.58/93,412.62
  6. Step 6: Final answer
    x = 73,321.56

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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.