Home / 90,724,518.90-136,086,778.35-30,140,244.90

Finding the Fourth Proportional to 90,724,518.90, 136,086,778.35 and 30,140,244.90

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Solution

The fourth proportional to 90,724,518.90, 136,086,778.35 and 30,140,244.90 is: 45,210,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724,518.90 : 136,086,778.35 = 30,140,244.90 : x
  2. Step 2: Convert to fraction form
    90,724,518.90/136,086,778.35 = 30,140,244.90/x
  3. Step 3: Cross multiply
    90,724,518.90x = 136,086,778.35 × 30,140,244.90
  4. Step 4: Simplify right side
    90,724,518.90x = 4,101,688,827,121,017.50
  5. Step 5: Solve for x
    x = 4,101,688,827,121,017.50/90,724,518.90
  6. Step 6: Final answer
    x = 45,210,367.35

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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.