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Finding the Fourth Proportional to 93,071.62, 128,439.82 and 50,630.26

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Solution

The fourth proportional to 93,071.62, 128,439.82 and 50,630.26 is: 69,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,071.62 : 128,439.82 = 50,630.26 : x
  2. Step 2: Convert to fraction form
    93,071.62/128,439.82 = 50,630.26/x
  3. Step 3: Cross multiply
    93,071.62x = 128,439.82 × 50,630.26
  4. Step 4: Simplify right side
    93,071.62x = 6,502,941,480.95
  5. Step 5: Solve for x
    x = 6,502,941,480.95/93,071.62
  6. Step 6: Final answer
    x = 69,870.29

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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.