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Finding the Fourth Proportional to 64,970.82, 89,660.42 and 38,113.80

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Solution

The fourth proportional to 64,970.82, 89,660.42 and 38,113.80 is: 52,597.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.82 : 89,660.42 = 38,113.80 : x
  2. Step 2: Convert to fraction form
    64,970.82/89,660.42 = 38,113.80/x
  3. Step 3: Cross multiply
    64,970.82x = 89,660.42 × 38,113.80
  4. Step 4: Simplify right side
    64,970.82x = 3,417,299,315.80
  5. Step 5: Solve for x
    x = 3,417,299,315.80/64,970.82
  6. Step 6: Final answer
    x = 52,597.45

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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.