Home / 76,389,813.20-114,416,758.20-66,312,117.20

Finding the Fourth Proportional to 76,389,813.20, 114,416,758.20 and 66,312,117.20

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Solution

The fourth proportional to 76,389,813.20, 114,416,758.20 and 66,312,117.20 is: 99,322,372.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,389,813.20 : 114,416,758.20 = 66,312,117.20 : x
  2. Step 2: Convert to fraction form
    76,389,813.20/114,416,758.20 = 66,312,117.20/x
  3. Step 3: Cross multiply
    76,389,813.20x = 114,416,758.20 × 66,312,117.20
  4. Step 4: Simplify right side
    76,389,813.20x = 7,587,217,479,402,462
  5. Step 5: Solve for x
    x = 7,587,217,479,402,462/76,389,813.20
  6. Step 6: Final answer
    x = 99,322,372.47

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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.