Home / 47,459.20-71,188.80-12,402.40

Finding the Fourth Proportional to 47,459.20, 71,188.80 and 12,402.40

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Solution

The fourth proportional to 47,459.20, 71,188.80 and 12,402.40 is: 18,603.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,459.20 : 71,188.80 = 12,402.40 : x
  2. Step 2: Convert to fraction form
    47,459.20/71,188.80 = 12,402.40/x
  3. Step 3: Cross multiply
    47,459.20x = 71,188.80 × 12,402.40
  4. Step 4: Simplify right side
    47,459.20x = 882,911,973.12
  5. Step 5: Solve for x
    x = 882,911,973.12/47,459.20
  6. Step 6: Final answer
    x = 18,603.60

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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.