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Finding the Fourth Proportional to 77,353.83, 106,742.75 and 45,518.40

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Solution

The fourth proportional to 77,353.83, 106,742.75 and 45,518.40 is: 62,812.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,353.83 : 106,742.75 = 45,518.40 : x
  2. Step 2: Convert to fraction form
    77,353.83/106,742.75 = 45,518.40/x
  3. Step 3: Cross multiply
    77,353.83x = 106,742.75 × 45,518.40
  4. Step 4: Simplify right side
    77,353.83x = 4,858,758,964.01
  5. Step 5: Solve for x
    x = 4,858,758,964.01/77,353.83
  6. Step 6: Final answer
    x = 62,812.13

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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.