Home / 31,506,082.40-47,164,645.20-18,720,005.60

Finding the Fourth Proportional to 31,506,082.40, 47,164,645.20 and 18,720,005.60

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Solution

The fourth proportional to 31,506,082.40, 47,164,645.20 and 18,720,005.60 is: 28,023,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,506,082.40 : 47,164,645.20 = 18,720,005.60 : x
  2. Step 2: Convert to fraction form
    31,506,082.40/47,164,645.20 = 18,720,005.60/x
  3. Step 3: Cross multiply
    31,506,082.40x = 47,164,645.20 × 18,720,005.60
  4. Step 4: Simplify right side
    31,506,082.40x = 882,922,422,266,013.25
  5. Step 5: Solve for x
    x = 882,922,422,266,013.25/31,506,082.40
  6. Step 6: Final answer
    x = 28,023,872.06

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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.