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Finding the Fourth Proportional to 88,014.72, 121,459.80 and 47,729.40

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Solution

The fourth proportional to 88,014.72, 121,459.80 and 47,729.40 is: 65,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,014.72 : 121,459.80 = 47,729.40 : x
  2. Step 2: Convert to fraction form
    88,014.72/121,459.80 = 47,729.40/x
  3. Step 3: Cross multiply
    88,014.72x = 121,459.80 × 47,729.40
  4. Step 4: Simplify right side
    88,014.72x = 5,797,203,378.12
  5. Step 5: Solve for x
    x = 5,797,203,378.12/88,014.72
  6. Step 6: Final answer
    x = 65,866.29

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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.