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Finding the Fourth Proportional to 93,045.40, 128,400.06 and 50,605.72

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Solution

The fourth proportional to 93,045.40, 128,400.06 and 50,605.72 is: 69,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,045.40 : 128,400.06 = 50,605.72 : x
  2. Step 2: Convert to fraction form
    93,045.40/128,400.06 = 50,605.72/x
  3. Step 3: Cross multiply
    93,045.40x = 128,400.06 × 50,605.72
  4. Step 4: Simplify right side
    93,045.40x = 6,497,777,484.34
  5. Step 5: Solve for x
    x = 6,497,777,484.34/93,045.40
  6. Step 6: Final answer
    x = 69,834.48

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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.