Home / 76,320,428.40-114,480,642.60-45,709,426.80

Finding the Fourth Proportional to 76,320,428.40, 114,480,642.60 and 45,709,426.80

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Solution

The fourth proportional to 76,320,428.40, 114,480,642.60 and 45,709,426.80 is: 68,564,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,320,428.40 : 114,480,642.60 = 45,709,426.80 : x
  2. Step 2: Convert to fraction form
    76,320,428.40/114,480,642.60 = 45,709,426.80/x
  3. Step 3: Cross multiply
    76,320,428.40x = 114,480,642.60 × 45,709,426.80
  4. Step 4: Simplify right side
    76,320,428.40x = 5,232,844,552,941,661
  5. Step 5: Solve for x
    x = 5,232,844,552,941,661/76,320,428.40
  6. Step 6: Final answer
    x = 68,564,140.20

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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.