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Finding the Fourth Proportional to 93,045.29, 128,439 and 65,962.94

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Solution

The fourth proportional to 93,045.29, 128,439 and 65,962.94 is: 91,054.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,045.29 : 128,439 = 65,962.94 : x
  2. Step 2: Convert to fraction form
    93,045.29/128,439 = 65,962.94/x
  3. Step 3: Cross multiply
    93,045.29x = 128,439 × 65,962.94
  4. Step 4: Simplify right side
    93,045.29x = 8,472,213,408.47
  5. Step 5: Solve for x
    x = 8,472,213,408.47/93,045.29
  6. Step 6: Final answer
    x = 91,054.73

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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.