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Finding the Fourth Proportional to 93,246.39, 128,641.50 and 64,968.48

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Solution

The fourth proportional to 93,246.39, 128,641.50 and 64,968.48 is: 89,629.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,246.39 : 128,641.50 = 64,968.48 : x
  2. Step 2: Convert to fraction form
    93,246.39/128,641.50 = 64,968.48/x
  3. Step 3: Cross multiply
    93,246.39x = 128,641.50 × 64,968.48
  4. Step 4: Simplify right side
    93,246.39x = 8,357,642,719.92
  5. Step 5: Solve for x
    x = 8,357,642,719.92/93,246.39
  6. Step 6: Final answer
    x = 89,629.67

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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.