Home / 42,919,995.20-64,379,992.80-38,217,070.40

Finding the Fourth Proportional to 42,919,995.20, 64,379,992.80 and 38,217,070.40

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Solution

The fourth proportional to 42,919,995.20, 64,379,992.80 and 38,217,070.40 is: 57,325,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,919,995.20 : 64,379,992.80 = 38,217,070.40 : x
  2. Step 2: Convert to fraction form
    42,919,995.20/64,379,992.80 = 38,217,070.40/x
  3. Step 3: Cross multiply
    42,919,995.20x = 64,379,992.80 × 38,217,070.40
  4. Step 4: Simplify right side
    42,919,995.20x = 2,460,414,717,189,093
  5. Step 5: Solve for x
    x = 2,460,414,717,189,093/42,919,995.20
  6. Step 6: Final answer
    x = 57,325,605.60

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Similar ratio
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1.5x scale

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.