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Finding the Fourth Proportional to 85,624.80, 128,437.38 and 46,200.48

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Solution

The fourth proportional to 85,624.80, 128,437.38 and 46,200.48 is: 69,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,624.80 : 128,437.38 = 46,200.48 : x
  2. Step 2: Convert to fraction form
    85,624.80/128,437.38 = 46,200.48/x
  3. Step 3: Cross multiply
    85,624.80x = 128,437.38 × 46,200.48
  4. Step 4: Simplify right side
    85,624.80x = 5,933,868,605.94
  5. Step 5: Solve for x
    x = 5,933,868,605.94/85,624.80
  6. Step 6: Final answer
    x = 69,300.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.