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Finding the Fourth Proportional to 47,140.60, 70,710.90 and 45,326.20

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Solution

The fourth proportional to 47,140.60, 70,710.90 and 45,326.20 is: 67,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,140.60 : 70,710.90 = 45,326.20 : x
  2. Step 2: Convert to fraction form
    47,140.60/70,710.90 = 45,326.20/x
  3. Step 3: Cross multiply
    47,140.60x = 70,710.90 × 45,326.20
  4. Step 4: Simplify right side
    47,140.60x = 3,205,056,395.58
  5. Step 5: Solve for x
    x = 3,205,056,395.58/47,140.60
  6. Step 6: Final answer
    x = 67,989.30

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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.