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Finding the Fourth Proportional to 93,457.81, 128,890.37 and 57,131.74

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Solution

The fourth proportional to 93,457.81, 128,890.37 and 57,131.74 is: 78,792.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,457.81 : 128,890.37 = 57,131.74 : x
  2. Step 2: Convert to fraction form
    93,457.81/128,890.37 = 57,131.74/x
  3. Step 3: Cross multiply
    93,457.81x = 128,890.37 × 57,131.74
  4. Step 4: Simplify right side
    93,457.81x = 7,363,731,411.29
  5. Step 5: Solve for x
    x = 7,363,731,411.29/93,457.81
  6. Step 6: Final answer
    x = 78,792.04

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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.