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Finding the Fourth Proportional to 92,909.80, 128,215.50 and 50,468.29

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Solution

The fourth proportional to 92,909.80, 128,215.50 and 50,468.29 is: 69,646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,909.80 : 128,215.50 = 50,468.29 : x
  2. Step 2: Convert to fraction form
    92,909.80/128,215.50 = 50,468.29/x
  3. Step 3: Cross multiply
    92,909.80x = 128,215.50 × 50,468.29
  4. Step 4: Simplify right side
    92,909.80x = 6,470,817,036.50
  5. Step 5: Solve for x
    x = 6,470,817,036.50/92,909.80
  6. Step 6: Final answer
    x = 69,646.23

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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.