Home / 47,038.20-70,557.30-20,729.40

Finding the Fourth Proportional to 47,038.20, 70,557.30 and 20,729.40

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Solution

The fourth proportional to 47,038.20, 70,557.30 and 20,729.40 is: 31,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,038.20 : 70,557.30 = 20,729.40 : x
  2. Step 2: Convert to fraction form
    47,038.20/70,557.30 = 20,729.40/x
  3. Step 3: Cross multiply
    47,038.20x = 70,557.30 × 20,729.40
  4. Step 4: Simplify right side
    47,038.20x = 1,462,610,494.62
  5. Step 5: Solve for x
    x = 1,462,610,494.62/47,038.20
  6. Step 6: Final answer
    x = 31,094.10

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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.