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Finding the Fourth Proportional to 70,660.53, 105,530.87 and 63,312.21

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Solution

The fourth proportional to 70,660.53, 105,530.87 and 63,312.21 is: 94,556.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,660.53 : 105,530.87 = 63,312.21 : x
  2. Step 2: Convert to fraction form
    70,660.53/105,530.87 = 63,312.21/x
  3. Step 3: Cross multiply
    70,660.53x = 105,530.87 × 63,312.21
  4. Step 4: Simplify right side
    70,660.53x = 6,681,392,761.20
  5. Step 5: Solve for x
    x = 6,681,392,761.20/70,660.53
  6. Step 6: Final answer
    x = 94,556.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.