Home / 31,340,043.60-47,010,065.40-20,590,501.20

Finding the Fourth Proportional to 31,340,043.60, 47,010,065.40 and 20,590,501.20

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Solution

The fourth proportional to 31,340,043.60, 47,010,065.40 and 20,590,501.20 is: 30,885,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,340,043.60 : 47,010,065.40 = 20,590,501.20 : x
  2. Step 2: Convert to fraction form
    31,340,043.60/47,010,065.40 = 20,590,501.20/x
  3. Step 3: Cross multiply
    31,340,043.60x = 47,010,065.40 × 20,590,501.20
  4. Step 4: Simplify right side
    31,340,043.60x = 967,960,808,030,778.38
  5. Step 5: Solve for x
    x = 967,960,808,030,778.38/31,340,043.60
  6. Step 6: Final answer
    x = 30,885,751.80

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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.