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Finding the Fourth Proportional to 62,870.77, 86,723.62 and 38,675.80

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Solution

The fourth proportional to 62,870.77, 86,723.62 and 38,675.80 is: 53,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,870.77 : 86,723.62 = 38,675.80 : x
  2. Step 2: Convert to fraction form
    62,870.77/86,723.62 = 38,675.80/x
  3. Step 3: Cross multiply
    62,870.77x = 86,723.62 × 38,675.80
  4. Step 4: Simplify right side
    62,870.77x = 3,354,105,382.40
  5. Step 5: Solve for x
    x = 3,354,105,382.40/62,870.77
  6. Step 6: Final answer
    x = 53,349.20

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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.