Home / 72,701,328.80-109,051,993.20-56,439,234.20

Finding the Fourth Proportional to 72,701,328.80, 109,051,993.20 and 56,439,234.20

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Solution

The fourth proportional to 72,701,328.80, 109,051,993.20 and 56,439,234.20 is: 84,658,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,701,328.80 : 109,051,993.20 = 56,439,234.20 : x
  2. Step 2: Convert to fraction form
    72,701,328.80/109,051,993.20 = 56,439,234.20/x
  3. Step 3: Cross multiply
    72,701,328.80x = 109,051,993.20 × 56,439,234.20
  4. Step 4: Simplify right side
    72,701,328.80x = 6,154,810,984,191,608
  5. Step 5: Solve for x
    x = 6,154,810,984,191,608/72,701,328.80
  6. Step 6: Final answer
    x = 84,658,851.30

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Double scale
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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.