Home / 61,345.20-92,017.80-31,820.70

Finding the Fourth Proportional to 61,345.20, 92,017.80 and 31,820.70

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Solution

The fourth proportional to 61,345.20, 92,017.80 and 31,820.70 is: 47,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,345.20 : 92,017.80 = 31,820.70 : x
  2. Step 2: Convert to fraction form
    61,345.20/92,017.80 = 31,820.70/x
  3. Step 3: Cross multiply
    61,345.20x = 92,017.80 × 31,820.70
  4. Step 4: Simplify right side
    61,345.20x = 2,928,070,808.46
  5. Step 5: Solve for x
    x = 2,928,070,808.46/61,345.20
  6. Step 6: Final answer
    x = 47,731.05

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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.