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Finding the Fourth Proportional to 69,987.53, 105,030.50 and 63,295.31

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Solution

The fourth proportional to 69,987.53, 105,030.50 and 63,295.31 is: 94,987.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987.53 : 105,030.50 = 63,295.31 : x
  2. Step 2: Convert to fraction form
    69,987.53/105,030.50 = 63,295.31/x
  3. Step 3: Cross multiply
    69,987.53x = 105,030.50 × 63,295.31
  4. Step 4: Simplify right side
    69,987.53x = 6,647,937,215.33
  5. Step 5: Solve for x
    x = 6,647,937,215.33/69,987.53
  6. Step 6: Final answer
    x = 94,987.46

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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.