Home / 85,416,008.40-127,825,414.20-78,249,646.80

Finding the Fourth Proportional to 85,416,008.40, 127,825,414.20 and 78,249,646.80

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Solution

The fourth proportional to 85,416,008.40, 127,825,414.20 and 78,249,646.80 is: 117,100,924.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,416,008.40 : 127,825,414.20 = 78,249,646.80 : x
  2. Step 2: Convert to fraction form
    85,416,008.40/127,825,414.20 = 78,249,646.80/x
  3. Step 3: Cross multiply
    85,416,008.40x = 127,825,414.20 × 78,249,646.80
  4. Step 4: Simplify right side
    85,416,008.40x = 10,002,293,513,213,704
  5. Step 5: Solve for x
    x = 10,002,293,513,213,704/85,416,008.40
  6. Step 6: Final answer
    x = 117,100,924.06

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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.