Home / 93,257.28-128,656.50-64,979.37

Finding the Fourth Proportional to 93,257.28, 128,656.50 and 64,979.37

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Solution

The fourth proportional to 93,257.28, 128,656.50 and 64,979.37 is: 89,644.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,257.28 : 128,656.50 = 64,979.37 : x
  2. Step 2: Convert to fraction form
    93,257.28/128,656.50 = 64,979.37/x
  3. Step 3: Cross multiply
    93,257.28x = 128,656.50 × 64,979.37
  4. Step 4: Simplify right side
    93,257.28x = 8,360,018,316.41
  5. Step 5: Solve for x
    x = 8,360,018,316.41/93,257.28
  6. Step 6: Final answer
    x = 89,644.67

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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.