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Finding the Fourth Proportional to 77,647.87, 107,150.61 and 47,483.74

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Solution

The fourth proportional to 77,647.87, 107,150.61 and 47,483.74 is: 65,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,647.87 : 107,150.61 = 47,483.74 : x
  2. Step 2: Convert to fraction form
    77,647.87/107,150.61 = 47,483.74/x
  3. Step 3: Cross multiply
    77,647.87x = 107,150.61 × 47,483.74
  4. Step 4: Simplify right side
    77,647.87x = 5,087,911,706.08
  5. Step 5: Solve for x
    x = 5,087,911,706.08/77,647.87
  6. Step 6: Final answer
    x = 65,525.45

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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.