Home / 77,477.28-106,901.20-45,649.12

Finding the Fourth Proportional to 77,477.28, 106,901.20 and 45,649.12

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Solution

The fourth proportional to 77,477.28, 106,901.20 and 45,649.12 is: 62,985.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,477.28 : 106,901.20 = 45,649.12 : x
  2. Step 2: Convert to fraction form
    77,477.28/106,901.20 = 45,649.12/x
  3. Step 3: Cross multiply
    77,477.28x = 106,901.20 × 45,649.12
  4. Step 4: Simplify right side
    77,477.28x = 4,879,945,706.94
  5. Step 5: Solve for x
    x = 4,879,945,706.94/77,477.28
  6. Step 6: Final answer
    x = 62,985.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.