Home / 49,482.40-74,345.28-31,720.72

Finding the Fourth Proportional to 49,482.40, 74,345.28 and 31,720.72

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Solution

The fourth proportional to 49,482.40, 74,345.28 and 31,720.72 is: 47,659.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,482.40 : 74,345.28 = 31,720.72 : x
  2. Step 2: Convert to fraction form
    49,482.40/74,345.28 = 31,720.72/x
  3. Step 3: Cross multiply
    49,482.40x = 74,345.28 × 31,720.72
  4. Step 4: Simplify right side
    49,482.40x = 2,358,285,810.20
  5. Step 5: Solve for x
    x = 2,358,285,810.20/49,482.40
  6. Step 6: Final answer
    x = 47,659.08

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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.