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Finding the Fourth Proportional to 93,456.66, 128,970.12 and 51,015.18

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Solution

The fourth proportional to 93,456.66, 128,970.12 and 51,015.18 is: 70,400.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,456.66 : 128,970.12 = 51,015.18 : x
  2. Step 2: Convert to fraction form
    93,456.66/128,970.12 = 51,015.18/x
  3. Step 3: Cross multiply
    93,456.66x = 128,970.12 × 51,015.18
  4. Step 4: Simplify right side
    93,456.66x = 6,579,433,886.42
  5. Step 5: Solve for x
    x = 6,579,433,886.42/93,456.66
  6. Step 6: Final answer
    x = 70,400.91

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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.