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Finding the Fourth Proportional to 93,428.74, 128,934.51 and 53,148.34

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Solution

The fourth proportional to 93,428.74, 128,934.51 and 53,148.34 is: 73,346.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,428.74 : 128,934.51 = 53,148.34 : x
  2. Step 2: Convert to fraction form
    93,428.74/128,934.51 = 53,148.34/x
  3. Step 3: Cross multiply
    93,428.74x = 128,934.51 × 53,148.34
  4. Step 4: Simplify right side
    93,428.74x = 6,852,655,175.21
  5. Step 5: Solve for x
    x = 6,852,655,175.21/93,428.74
  6. Step 6: Final answer
    x = 73,346.33

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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.